https://www.graalvm.org/ 
public class com.oracle.svm.hosted.FeatureHandler
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.oracle.svm.hosted.FeatureHandler
  super_class: java.lang.Object
{
  private final java.util.ArrayList<org.graalvm.nativeimage.hosted.Feature> featureInstances;
    descriptor: Ljava/util/ArrayList;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/ArrayList<Lorg/graalvm/nativeimage/hosted/Feature;>;

  private final java.util.HashSet<java.lang.Class<?>> registeredFeatures;
    descriptor: Ljava/util/HashSet;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/HashSet<Ljava/lang/Class<*>;>;

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.svm.hosted.FeatureHandler this
         0: .line 57
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 65
            aload 0 /* this */
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            putfield com.oracle.svm.hosted.FeatureHandler.featureInstances:Ljava/util/ArrayList;
         2: .line 66
            aload 0 /* this */
            new java.util.HashSet
            dup
            invokespecial java.util.HashSet.<init>:()V
            putfield com.oracle.svm.hosted.FeatureHandler.registeredFeatures:Ljava/util/HashSet;
         3: .line 57
            return
        end local 0 // com.oracle.svm.hosted.FeatureHandler this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lcom/oracle/svm/hosted/FeatureHandler;

  public void forEachFeature(java.util.function.Consumer<org.graalvm.nativeimage.hosted.Feature>);
    descriptor: (Ljava/util/function/Consumer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=4, args_size=2
        start local 0 // com.oracle.svm.hosted.FeatureHandler this
        start local 1 // java.util.function.Consumer consumer
         0: .line 69
            aload 0 /* this */
            getfield com.oracle.svm.hosted.FeatureHandler.featureInstances:Ljava/util/ArrayList;
            invokevirtual java.util.ArrayList.iterator:()Ljava/util/Iterator;
            astore 3
            goto 3
      StackMap locals: com.oracle.svm.hosted.FeatureHandler java.util.function.Consumer top java.util.Iterator
      StackMap stack:
         1: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.nativeimage.hosted.Feature
            astore 2 /* feature */
        start local 2 // org.graalvm.nativeimage.hosted.Feature feature
         2: .line 70
            aload 1 /* consumer */
            aload 2 /* feature */
            invokeinterface java.util.function.Consumer.accept:(Ljava/lang/Object;)V
        end local 2 // org.graalvm.nativeimage.hosted.Feature feature
         3: .line 69
      StackMap locals:
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 1
         4: .line 72
            return
        end local 1 // java.util.function.Consumer consumer
        end local 0 // com.oracle.svm.hosted.FeatureHandler this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    5     0      this  Lcom/oracle/svm/hosted/FeatureHandler;
            0    5     1  consumer  Ljava/util/function/Consumer<Lorg/graalvm/nativeimage/hosted/Feature;>;
            2    3     2   feature  Lorg/graalvm/nativeimage/hosted/Feature;
    Signature: (Ljava/util/function/Consumer<Lorg/graalvm/nativeimage/hosted/Feature;>;)V
    MethodParameters:
          Name  Flags
      consumer  

  public void forEachGraalFeature(java.util.function.Consumer<com.oracle.svm.core.graal.GraalFeature>);
    descriptor: (Ljava/util/function/Consumer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=4, args_size=2
        start local 0 // com.oracle.svm.hosted.FeatureHandler this
        start local 1 // java.util.function.Consumer consumer
         0: .line 75
            aload 0 /* this */
            getfield com.oracle.svm.hosted.FeatureHandler.featureInstances:Ljava/util/ArrayList;
            invokevirtual java.util.ArrayList.iterator:()Ljava/util/Iterator;
            astore 3
            goto 4
      StackMap locals: com.oracle.svm.hosted.FeatureHandler java.util.function.Consumer top java.util.Iterator
      StackMap stack:
         1: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.graalvm.nativeimage.hosted.Feature
            astore 2 /* feature */
        start local 2 // org.graalvm.nativeimage.hosted.Feature feature
         2: .line 76
            aload 2 /* feature */
            instanceof com.oracle.svm.core.graal.GraalFeature
            ifeq 4
         3: .line 77
            aload 1 /* consumer */
            aload 2 /* feature */
            checkcast com.oracle.svm.core.graal.GraalFeature
            invokeinterface java.util.function.Consumer.accept:(Ljava/lang/Object;)V
        end local 2 // org.graalvm.nativeimage.hosted.Feature feature
         4: .line 75
      StackMap locals:
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 1
         5: .line 80
            return
        end local 1 // java.util.function.Consumer consumer
        end local 0 // com.oracle.svm.hosted.FeatureHandler this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    6     0      this  Lcom/oracle/svm/hosted/FeatureHandler;
            0    6     1  consumer  Ljava/util/function/Consumer<Lcom/oracle/svm/core/graal/GraalFeature;>;
            2    4     2   feature  Lorg/graalvm/nativeimage/hosted/Feature;
    Signature: (Ljava/util/function/Consumer<Lcom/oracle/svm/core/graal/GraalFeature;>;)V
    MethodParameters:
          Name  Flags
      consumer  

  public void registerFeatures(com.oracle.svm.hosted.ImageClassLoader, org.graalvm.compiler.debug.DebugContext);
    descriptor: (Lcom/oracle/svm/hosted/ImageClassLoader;Lorg/graalvm/compiler/debug/DebugContext;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=12, args_size=3
        start local 0 // com.oracle.svm.hosted.FeatureHandler this
        start local 1 // com.oracle.svm.hosted.ImageClassLoader loader
        start local 2 // org.graalvm.compiler.debug.DebugContext debug
         0: .line 84
            new com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl
            dup
            aload 0 /* this */
            aload 1 /* loader */
            aload 2 /* debug */
            invokespecial com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl.<init>:(Lcom/oracle/svm/hosted/FeatureHandler;Lcom/oracle/svm/hosted/ImageClassLoader;Lorg/graalvm/compiler/debug/DebugContext;)V
            astore 3 /* access */
        start local 3 // com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl access
         1: .line 86
            new java.util.LinkedHashSet
            dup
            aload 1 /* loader */
            ldc Lcom/oracle/svm/core/annotate/AutomaticFeature;
            iconst_1
            invokevirtual com.oracle.svm.hosted.ImageClassLoader.findAnnotatedClasses:(Ljava/lang/Class;Z)Ljava/util/List;
            invokespecial java.util.LinkedHashSet.<init>:(Ljava/util/Collection;)V
            astore 4 /* automaticFeatures */
        start local 4 // java.util.LinkedHashSet automaticFeatures
         2: .line 87
            new java.util.HashMap
            dup
            invokespecial java.util.HashMap.<init>:()V
            astore 5 /* specificAutomaticFeatures */
        start local 5 // java.util.Map specificAutomaticFeatures
         3: .line 88
            aload 4 /* automaticFeatures */
            invokevirtual java.util.LinkedHashSet.iterator:()Ljava/util/Iterator;
            astore 7
            goto 20
      StackMap locals: com.oracle.svm.hosted.FeatureHandler com.oracle.svm.hosted.ImageClassLoader org.graalvm.compiler.debug.DebugContext com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl java.util.LinkedHashSet java.util.Map top java.util.Iterator
      StackMap stack:
         4: aload 7
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.Class
            astore 6 /* automaticFeature */
        start local 6 // java.lang.Class automaticFeature
         5: .line 90
            aload 6 /* automaticFeature */
            astore 8 /* mostSpecific */
        start local 8 // java.lang.Class mostSpecific
         6: .line 91
            iconst_0
            istore 9 /* foundMostSpecific */
        start local 9 // boolean foundMostSpecific
         7: .line 93
      StackMap locals: com.oracle.svm.hosted.FeatureHandler com.oracle.svm.hosted.ImageClassLoader org.graalvm.compiler.debug.DebugContext com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl java.util.LinkedHashSet java.util.Map java.lang.Class java.util.Iterator java.lang.Class int
      StackMap stack:
            aload 1 /* loader */
            aload 8 /* mostSpecific */
            iconst_1
            invokevirtual com.oracle.svm.hosted.ImageClassLoader.findSubclasses:(Ljava/lang/Class;Z)Ljava/util/List;
            astore 10 /* featureSubclasses */
        start local 10 // java.util.List featureSubclasses
         8: .line 94
            aload 10 /* featureSubclasses */
            aload 8 /* mostSpecific */
            invokeinterface java.util.List.remove:(Ljava/lang/Object;)Z
            pop
         9: .line 95
            aload 10 /* featureSubclasses */
            aload 4 /* automaticFeatures */
            invokedynamic test(Ljava/util/LinkedHashSet;)Ljava/util/function/Predicate;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;)Z
                  com/oracle/svm/hosted/FeatureHandler.lambda$0(Ljava/util/LinkedHashSet;Ljava/lang/Class;)Z (6)
                  (Ljava/lang/Class;)Z
            invokeinterface java.util.List.removeIf:(Ljava/util/function/Predicate;)Z
            pop
        10: .line 96
            aload 10 /* featureSubclasses */
            invokeinterface java.util.List.isEmpty:()Z
            ifeq 13
        11: .line 97
            iconst_1
            istore 9 /* foundMostSpecific */
        12: .line 98
            goto 17
        13: .line 99
      StackMap locals: java.util.List
      StackMap stack:
            aload 10 /* featureSubclasses */
            invokeinterface java.util.List.size:()I
            iconst_1
            if_icmple 16
        14: .line 100
            aload 10 /* featureSubclasses */
            invokeinterface java.util.List.stream:()Ljava/util/stream/Stream;
            invokedynamic apply()Ljava/util/function/Function;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;)Ljava/lang/Object;
                  java/lang/Class.getName()Ljava/lang/String; (5)
                  (Ljava/lang/Class;)Ljava/lang/String;
            invokeinterface java.util.stream.Stream.map:(Ljava/util/function/Function;)Ljava/util/stream/Stream;
            ldc " "
            invokestatic java.util.stream.Collectors.joining:(Ljava/lang/CharSequence;)Ljava/util/stream/Collector;
            invokeinterface java.util.stream.Stream.collect:(Ljava/util/stream/Collector;)Ljava/lang/Object;
            checkcast java.lang.String
            astore 11 /* candidates */
        start local 11 // java.lang.String candidates
        15: .line 101
            new java.lang.StringBuilder
            dup
            ldc "Ambiguous @AutomaticFeature extension. Conflicting candidates: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 11 /* candidates */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokestatic com.oracle.svm.core.util.VMError.shouldNotReachHere:(Ljava/lang/String;)Ljava/lang/RuntimeException;
            pop
        end local 11 // java.lang.String candidates
        16: .line 103
      StackMap locals:
      StackMap stack:
            aload 10 /* featureSubclasses */
            iconst_0
            invokeinterface java.util.List.get:(I)Ljava/lang/Object;
            checkcast java.lang.Class
            astore 8 /* mostSpecific */
        end local 10 // java.util.List featureSubclasses
        17: .line 105
      StackMap locals:
      StackMap stack:
            iload 9 /* foundMostSpecific */
            ifeq 7
        18: .line 107
            aload 8 /* mostSpecific */
            aload 6 /* automaticFeature */
            if_acmpeq 20
        19: .line 108
            aload 5 /* specificAutomaticFeatures */
            aload 6 /* automaticFeature */
            aload 8 /* mostSpecific */
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        end local 9 // boolean foundMostSpecific
        end local 8 // java.lang.Class mostSpecific
        end local 6 // java.lang.Class automaticFeature
        20: .line 88
      StackMap locals: com.oracle.svm.hosted.FeatureHandler com.oracle.svm.hosted.ImageClassLoader org.graalvm.compiler.debug.DebugContext com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl java.util.LinkedHashSet java.util.Map top java.util.Iterator
      StackMap stack:
            aload 7
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 4
        21: .line 113
            aload 5 /* specificAutomaticFeatures */
            invokeinterface java.util.Map.values:()Ljava/util/Collection;
            invokeinterface java.util.Collection.iterator:()Ljava/util/Iterator;
            astore 7
            goto 24
      StackMap locals:
      StackMap stack:
        22: aload 7
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.Class
            astore 6 /* specific */
        start local 6 // java.lang.Class specific
        23: .line 114
            aload 4 /* automaticFeatures */
            aload 6 /* specific */
            invokevirtual java.util.LinkedHashSet.remove:(Ljava/lang/Object;)Z
            pop
        end local 6 // java.lang.Class specific
        24: .line 113
      StackMap locals:
      StackMap stack:
            aload 7
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 22
        25: .line 117
            aload 5 /* specificAutomaticFeatures */
            dup
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            pop
            invokedynamic apply(Ljava/util/Map;)Ljava/util/function/Function;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;)Ljava/lang/Object;
                  java/util/Map.get(Ljava/lang/Object;)Ljava/lang/Object; (9 itf)
                  (Ljava/lang/Class;)Ljava/lang/Class;
            astore 6 /* specificClassProvider */
        start local 6 // java.util.function.Function specificClassProvider
        26: .line 119
            aload 4 /* automaticFeatures */
            invokevirtual java.util.LinkedHashSet.iterator:()Ljava/util/Iterator;
            astore 9
            goto 29
      StackMap locals: com.oracle.svm.hosted.FeatureHandler com.oracle.svm.hosted.ImageClassLoader org.graalvm.compiler.debug.DebugContext com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl java.util.LinkedHashSet java.util.Map java.util.function.Function top top java.util.Iterator
      StackMap stack:
        27: aload 9
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.Class
            astore 8 /* featureClass */
        start local 8 // java.lang.Class featureClass
        28: .line 120
            aload 0 /* this */
            aload 8 /* featureClass */
            aload 6 /* specificClassProvider */
            aload 3 /* access */
            invokevirtual com.oracle.svm.hosted.FeatureHandler.registerFeature:(Ljava/lang/Class;Ljava/util/function/Function;Lcom/oracle/svm/hosted/FeatureImpl$IsInConfigurationAccessImpl;)V
        end local 8 // java.lang.Class featureClass
        29: .line 119
      StackMap locals:
      StackMap stack:
            aload 9
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 27
        30: .line 123
            ldc ","
            getstatic com.oracle.svm.hosted.FeatureHandler$Options.Features:Lcom/oracle/svm/core/option/HostedOptionKey;
            invokevirtual com.oracle.svm.core.option.HostedOptionKey.getValue:()Ljava/lang/Object;
            checkcast java.lang.String[]
            invokestatic com.oracle.svm.core.option.OptionUtils.flatten:(Ljava/lang/String;[Ljava/lang/String;)Ljava/util/List;
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 9
            goto 36
      StackMap locals:
      StackMap stack:
        31: aload 9
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.String
            astore 8 /* featureName */
        start local 8 // java.lang.String featureName
        32: .line 125
            aload 0 /* this */
            aload 8 /* featureName */
            iconst_1
            aload 1 /* loader */
            invokevirtual com.oracle.svm.hosted.ImageClassLoader.getClassLoader:()Ljava/lang/ClassLoader;
            invokestatic java.lang.Class.forName:(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;
            aload 6 /* specificClassProvider */
            aload 3 /* access */
            invokevirtual com.oracle.svm.hosted.FeatureHandler.registerFeature:(Ljava/lang/Class;Ljava/util/function/Function;Lcom/oracle/svm/hosted/FeatureImpl$IsInConfigurationAccessImpl;)V
        33: .line 126
            goto 36
      StackMap locals: com.oracle.svm.hosted.FeatureHandler com.oracle.svm.hosted.ImageClassLoader org.graalvm.compiler.debug.DebugContext com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl java.util.LinkedHashSet java.util.Map java.util.function.Function top java.lang.String java.util.Iterator
      StackMap stack: java.lang.ClassNotFoundException
        34: pop
        35: .line 127
            ldc "Feature %s class not found on the classpath. Ensure that the name is correct and that the class is on the classpath."
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            aload 8 /* featureName */
            aastore
            invokestatic com.oracle.svm.core.util.UserError.abort:(Ljava/lang/String;[Ljava/lang/Object;)Lcom/oracle/svm/core/util/UserError$UserException;
            athrow
        end local 8 // java.lang.String featureName
        36: .line 123
      StackMap locals: com.oracle.svm.hosted.FeatureHandler com.oracle.svm.hosted.ImageClassLoader org.graalvm.compiler.debug.DebugContext com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl java.util.LinkedHashSet java.util.Map java.util.function.Function top top java.util.Iterator
      StackMap stack:
            aload 9
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 31
        37: .line 130
            return
        end local 6 // java.util.function.Function specificClassProvider
        end local 5 // java.util.Map specificAutomaticFeatures
        end local 4 // java.util.LinkedHashSet automaticFeatures
        end local 3 // com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl access
        end local 2 // org.graalvm.compiler.debug.DebugContext debug
        end local 1 // com.oracle.svm.hosted.ImageClassLoader loader
        end local 0 // com.oracle.svm.hosted.FeatureHandler this
      LocalVariableTable:
        Start  End  Slot                       Name  Signature
            0   38     0                       this  Lcom/oracle/svm/hosted/FeatureHandler;
            0   38     1                     loader  Lcom/oracle/svm/hosted/ImageClassLoader;
            0   38     2                      debug  Lorg/graalvm/compiler/debug/DebugContext;
            1   38     3                     access  Lcom/oracle/svm/hosted/FeatureImpl$IsInConfigurationAccessImpl;
            2   38     4          automaticFeatures  Ljava/util/LinkedHashSet<Ljava/lang/Class<*>;>;
            3   38     5  specificAutomaticFeatures  Ljava/util/Map<Ljava/lang/Class<*>;Ljava/lang/Class<*>;>;
            5   20     6           automaticFeature  Ljava/lang/Class<*>;
            6   20     8               mostSpecific  Ljava/lang/Class<Lorg/graalvm/nativeimage/hosted/Feature;>;
            7   20     9          foundMostSpecific  Z
            8   17    10          featureSubclasses  Ljava/util/List<Ljava/lang/Class<+Lorg/graalvm/nativeimage/hosted/Feature;>;>;
           15   16    11                 candidates  Ljava/lang/String;
           23   24     6                   specific  Ljava/lang/Class<*>;
           26   38     6      specificClassProvider  Ljava/util/function/Function<Ljava/lang/Class<*>;Ljava/lang/Class<*>;>;
           28   29     8               featureClass  Ljava/lang/Class<*>;
           32   36     8                featureName  Ljava/lang/String;
      Exception table:
        from    to  target  type
          32    33      34  Class java.lang.ClassNotFoundException
    MethodParameters:
        Name  Flags
      loader  
      debug   

  private void registerFeature(java.lang.Class<?>, java.util.function.Function<java.lang.Class<?>, java.lang.Class<?>>, com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl);
    descriptor: (Ljava/lang/Class;Ljava/util/function/Function;Lcom/oracle/svm/hosted/FeatureImpl$IsInConfigurationAccessImpl;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=6, locals=9, args_size=4
        start local 0 // com.oracle.svm.hosted.FeatureHandler this
        start local 1 // java.lang.Class baseFeatureClass
        start local 2 // java.util.function.Function specificClassProvider
        start local 3 // com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl access
         0: .line 139
            ldc Lorg/graalvm/nativeimage/hosted/Feature;
            aload 1 /* baseFeatureClass */
            invokevirtual java.lang.Class.isAssignableFrom:(Ljava/lang/Class;)Z
            ifne 2
         1: .line 140
            ldc "Class does not implement %s: %s"
            iconst_2
            anewarray java.lang.Object
            dup
            iconst_0
            ldc Lorg/graalvm/nativeimage/hosted/Feature;
            invokevirtual java.lang.Class.getName:()Ljava/lang/String;
            aastore
            dup
            iconst_1
            aload 1 /* baseFeatureClass */
            invokevirtual java.lang.Class.getName:()Ljava/lang/String;
            aastore
            invokestatic com.oracle.svm.core.util.UserError.abort:(Ljava/lang/String;[Ljava/lang/Object;)Lcom/oracle/svm/core/util/UserError$UserException;
            athrow
         2: .line 143
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.svm.hosted.FeatureHandler.registeredFeatures:Ljava/util/HashSet;
            aload 1 /* baseFeatureClass */
            invokevirtual java.util.HashSet.contains:(Ljava/lang/Object;)Z
            ifeq 4
         3: .line 144
            return
         4: .line 151
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.svm.hosted.FeatureHandler.registeredFeatures:Ljava/util/HashSet;
            aload 1 /* baseFeatureClass */
            invokevirtual java.util.HashSet.add:(Ljava/lang/Object;)Z
            pop
         5: .line 153
            aload 2 /* specificClassProvider */
            aload 1 /* baseFeatureClass */
            invokeinterface java.util.function.Function.apply:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Class
            astore 4 /* specificClass */
        start local 4 // java.lang.Class specificClass
         6: .line 154
            aload 4 /* specificClass */
            ifnull 7
            aload 4 /* specificClass */
            goto 8
      StackMap locals: java.lang.Class
      StackMap stack:
         7: aload 1 /* baseFeatureClass */
      StackMap locals:
      StackMap stack: java.lang.Class
         8: astore 5 /* featureClass */
        start local 5 // java.lang.Class featureClass
         9: .line 157
            aload 5 /* featureClass */
            invokestatic com.oracle.svm.util.ReflectionUtil.newInstance:(Ljava/lang/Class;)Ljava/lang/Object;
            checkcast org.graalvm.nativeimage.hosted.Feature
            astore 6 /* feature */
        start local 6 // org.graalvm.nativeimage.hosted.Feature feature
        10: .line 158
            goto 13
        end local 6 // org.graalvm.nativeimage.hosted.Feature feature
      StackMap locals: com.oracle.svm.hosted.FeatureHandler java.lang.Class java.util.function.Function com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl java.lang.Class java.lang.Class
      StackMap stack: com.oracle.svm.util.ReflectionUtil$ReflectionUtilError
        11: astore 7 /* ex */
        start local 7 // com.oracle.svm.util.ReflectionUtil$ReflectionUtilError ex
        12: .line 159
            aload 7 /* ex */
            invokevirtual com.oracle.svm.util.ReflectionUtil$ReflectionUtilError.getCause:()Ljava/lang/Throwable;
            ldc "Error instantiating Feature class %s. Ensure the class is not abstract and has a no-argument constructor."
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            aload 5 /* featureClass */
            invokevirtual java.lang.Class.getTypeName:()Ljava/lang/String;
            aastore
            invokestatic com.oracle.svm.core.util.UserError.abort:(Ljava/lang/Throwable;Ljava/lang/String;[Ljava/lang/Object;)Lcom/oracle/svm/core/util/UserError$UserException;
            athrow
        end local 7 // com.oracle.svm.util.ReflectionUtil$ReflectionUtilError ex
        start local 6 // org.graalvm.nativeimage.hosted.Feature feature
        13: .line 162
      StackMap locals: org.graalvm.nativeimage.hosted.Feature
      StackMap stack:
            aload 6 /* feature */
            aload 3 /* access */
            invokeinterface org.graalvm.nativeimage.hosted.Feature.isInConfiguration:(Lorg/graalvm/nativeimage/hosted/Feature$IsInConfigurationAccess;)Z
            ifne 15
        14: .line 163
            return
        15: .line 170
      StackMap locals:
      StackMap stack:
            aload 1 /* baseFeatureClass */
            aload 6 /* feature */
            invokestatic org.graalvm.nativeimage.ImageSingletons.add:(Ljava/lang/Class;Ljava/lang/Object;)V
        16: .line 175
            aload 6 /* feature */
            invokeinterface org.graalvm.nativeimage.hosted.Feature.getRequiredFeatures:()Ljava/util/List;
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 8
            goto 19
      StackMap locals: com.oracle.svm.hosted.FeatureHandler java.lang.Class java.util.function.Function com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl java.lang.Class java.lang.Class org.graalvm.nativeimage.hosted.Feature top java.util.Iterator
      StackMap stack:
        17: aload 8
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.lang.Class
            astore 7 /* requiredFeatureClass */
        start local 7 // java.lang.Class requiredFeatureClass
        18: .line 176
            aload 0 /* this */
            aload 7 /* requiredFeatureClass */
            aload 2 /* specificClassProvider */
            aload 3 /* access */
            invokevirtual com.oracle.svm.hosted.FeatureHandler.registerFeature:(Ljava/lang/Class;Ljava/util/function/Function;Lcom/oracle/svm/hosted/FeatureImpl$IsInConfigurationAccessImpl;)V
        end local 7 // java.lang.Class requiredFeatureClass
        19: .line 175
      StackMap locals:
      StackMap stack:
            aload 8
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 17
        20: .line 179
            aload 0 /* this */
            getfield com.oracle.svm.hosted.FeatureHandler.featureInstances:Ljava/util/ArrayList;
            aload 6 /* feature */
            invokevirtual java.util.ArrayList.add:(Ljava/lang/Object;)Z
            pop
        21: .line 180
            return
        end local 6 // org.graalvm.nativeimage.hosted.Feature feature
        end local 5 // java.lang.Class featureClass
        end local 4 // java.lang.Class specificClass
        end local 3 // com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl access
        end local 2 // java.util.function.Function specificClassProvider
        end local 1 // java.lang.Class baseFeatureClass
        end local 0 // com.oracle.svm.hosted.FeatureHandler this
      LocalVariableTable:
        Start  End  Slot                   Name  Signature
            0   22     0                   this  Lcom/oracle/svm/hosted/FeatureHandler;
            0   22     1       baseFeatureClass  Ljava/lang/Class<*>;
            0   22     2  specificClassProvider  Ljava/util/function/Function<Ljava/lang/Class<*>;Ljava/lang/Class<*>;>;
            0   22     3                 access  Lcom/oracle/svm/hosted/FeatureImpl$IsInConfigurationAccessImpl;
            6   22     4          specificClass  Ljava/lang/Class<*>;
            9   22     5           featureClass  Ljava/lang/Class<*>;
           10   11     6                feature  Lorg/graalvm/nativeimage/hosted/Feature;
           13   22     6                feature  Lorg/graalvm/nativeimage/hosted/Feature;
           12   13     7                     ex  Lcom/oracle/svm/util/ReflectionUtil$ReflectionUtilError;
           18   19     7   requiredFeatureClass  Ljava/lang/Class<+Lorg/graalvm/nativeimage/hosted/Feature;>;
      Exception table:
        from    to  target  type
           9    10      11  Class com.oracle.svm.util.ReflectionUtil$ReflectionUtilError
    Signature: (Ljava/lang/Class<*>;Ljava/util/function/Function<Ljava/lang/Class<*>;Ljava/lang/Class<*>;>;Lcom/oracle/svm/hosted/FeatureImpl$IsInConfigurationAccessImpl;)V
    MethodParameters:
                       Name  Flags
      baseFeatureClass       
      specificClassProvider  
      access                 

  private static boolean lambda$0(java.util.LinkedHashSet, java.lang.Class);
    descriptor: (Ljava/util/LinkedHashSet;Ljava/lang/Class;)Z
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
        start local 1 // java.lang.Class o
         0: .line 95
            aload 0
            aload 1 /* o */
            invokevirtual java.util.LinkedHashSet.contains:(Ljava/lang/Object;)Z
            ifeq 1
            iconst_0
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_1
      StackMap locals:
      StackMap stack: int
         2: ireturn
        end local 1 // java.lang.Class o
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     1     o  Ljava/lang/Class<+Lorg/graalvm/nativeimage/hosted/Feature;>;
}
SourceFile: "FeatureHandler.java"
NestMembers:
  com.oracle.svm.hosted.FeatureHandler$Options
InnerClasses:
  public UserException = com.oracle.svm.core.util.UserError$UserException of com.oracle.svm.core.util.UserError
  public Options = com.oracle.svm.hosted.FeatureHandler$Options of com.oracle.svm.hosted.FeatureHandler
  public IsInConfigurationAccessImpl = com.oracle.svm.hosted.FeatureImpl$IsInConfigurationAccessImpl of com.oracle.svm.hosted.FeatureImpl
  public final ReflectionUtilError = com.oracle.svm.util.ReflectionUtil$ReflectionUtilError of com.oracle.svm.util.ReflectionUtil
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles
  public abstract IsInConfigurationAccess = org.graalvm.nativeimage.hosted.Feature$IsInConfigurationAccess of org.graalvm.nativeimage.hosted.Feature