https://www.graalvm.org/ 
final class com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature
  super_class: java.lang.Object
{
  final org.graalvm.collections.UnmodifiableEconomicMap<java.lang.String, com.oracle.truffle.polyglot.HostMethodDesc> methods;
    descriptor: Lorg/graalvm/collections/UnmodifiableEconomicMap;
    flags: (0x0010) ACC_FINAL
    Signature: Lorg/graalvm/collections/UnmodifiableEconomicMap<Ljava/lang/String;Lcom/oracle/truffle/polyglot/HostMethodDesc;>;

  final org.graalvm.collections.UnmodifiableEconomicMap<java.lang.String, com.oracle.truffle.polyglot.HostMethodDesc> staticMethods;
    descriptor: Lorg/graalvm/collections/UnmodifiableEconomicMap;
    flags: (0x0010) ACC_FINAL
    Signature: Lorg/graalvm/collections/UnmodifiableEconomicMap<Ljava/lang/String;Lcom/oracle/truffle/polyglot/HostMethodDesc;>;

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 414
            ldc Lcom/oracle/truffle/polyglot/HostClassDesc;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature.$assertionsDisabled:Z
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>(com.oracle.truffle.polyglot.HostClassDesc$Members);
    descriptor: (Lcom/oracle/truffle/polyglot/HostClassDesc$Members;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature this
        start local 1 // com.oracle.truffle.polyglot.HostClassDesc$Members members
         0: .line 418
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 419
            aload 0 /* this */
            aload 1 /* members */
            getfield com.oracle.truffle.polyglot.HostClassDesc$Members.methods:Ljava/util/Map;
            invokestatic com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature.collectMethodsBySignature:(Ljava/util/Map;)Lorg/graalvm/collections/UnmodifiableEconomicMap;
            putfield com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature.methods:Lorg/graalvm/collections/UnmodifiableEconomicMap;
         2: .line 420
            aload 0 /* this */
            aload 1 /* members */
            getfield com.oracle.truffle.polyglot.HostClassDesc$Members.staticMethods:Ljava/util/Map;
            invokestatic com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature.collectMethodsBySignature:(Ljava/util/Map;)Lorg/graalvm/collections/UnmodifiableEconomicMap;
            putfield com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature.staticMethods:Lorg/graalvm/collections/UnmodifiableEconomicMap;
         3: .line 421
            return
        end local 1 // com.oracle.truffle.polyglot.HostClassDesc$Members members
        end local 0 // com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lcom/oracle/truffle/polyglot/HostClassDesc$MethodsBySignature;
            0    4     1  members  Lcom/oracle/truffle/polyglot/HostClassDesc$Members;
    MethodParameters:
         Name  Flags
      members  

  private static org.graalvm.collections.UnmodifiableEconomicMap<java.lang.String, com.oracle.truffle.polyglot.HostMethodDesc> collectMethodsBySignature(java.util.Map<java.lang.String, com.oracle.truffle.polyglot.HostMethodDesc>);
    descriptor: (Ljava/util/Map;)Lorg/graalvm/collections/UnmodifiableEconomicMap;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=8, args_size=1
        start local 0 // java.util.Map methods
         0: .line 424
            invokestatic org.graalvm.collections.EconomicMap.create:()Lorg/graalvm/collections/EconomicMap;
            astore 1 /* methodMap */
        start local 1 // org.graalvm.collections.EconomicMap methodMap
         1: .line 425
            aload 0 /* methods */
            invokeinterface java.util.Map.values:()Ljava/util/Collection;
            invokeinterface java.util.Collection.iterator:()Ljava/util/Iterator;
            astore 3
            goto 11
      StackMap locals: java.util.Map org.graalvm.collections.EconomicMap top java.util.Iterator
      StackMap stack:
         2: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast com.oracle.truffle.polyglot.HostMethodDesc
            astore 2 /* method */
        start local 2 // com.oracle.truffle.polyglot.HostMethodDesc method
         3: .line 426
            aload 2 /* method */
            invokevirtual com.oracle.truffle.polyglot.HostMethodDesc.isConstructor:()Z
            ifeq 5
         4: .line 427
            goto 11
         5: .line 429
      StackMap locals: java.util.Map org.graalvm.collections.EconomicMap com.oracle.truffle.polyglot.HostMethodDesc java.util.Iterator
      StackMap stack:
            aload 2 /* method */
            invokevirtual com.oracle.truffle.polyglot.HostMethodDesc.getOverloads:()[Lcom/oracle/truffle/polyglot/HostMethodDesc$SingleMethod;
            dup
            astore 7
            arraylength
            istore 6
            iconst_0
            istore 5
            goto 10
      StackMap locals: java.util.Map org.graalvm.collections.EconomicMap com.oracle.truffle.polyglot.HostMethodDesc java.util.Iterator top int int com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod[]
      StackMap stack:
         6: aload 7
            iload 5
            aaload
            astore 4 /* m */
        start local 4 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod m
         7: .line 430
            getstatic com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature.$assertionsDisabled:Z
            ifne 8
            aload 4 /* m */
            invokevirtual com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod.isMethod:()Z
            ifne 8
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         8: .line 431
      StackMap locals: java.util.Map org.graalvm.collections.EconomicMap com.oracle.truffle.polyglot.HostMethodDesc java.util.Iterator com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod int int com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod[]
      StackMap stack:
            aload 1 /* methodMap */
            aload 4 /* m */
            invokevirtual com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod.getReflectionMethod:()Ljava/lang/reflect/Executable;
            checkcast java.lang.reflect.Method
            invokestatic com.oracle.truffle.polyglot.HostInteropReflect.toNameAndSignature:(Ljava/lang/reflect/Method;)Ljava/lang/String;
            aload 4 /* m */
            invokeinterface org.graalvm.collections.EconomicMap.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        end local 4 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod m
         9: .line 429
            iinc 5 1
      StackMap locals: java.util.Map org.graalvm.collections.EconomicMap com.oracle.truffle.polyglot.HostMethodDesc java.util.Iterator top int int com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod[]
      StackMap stack:
        10: iload 5
            iload 6
            if_icmplt 6
        end local 2 // com.oracle.truffle.polyglot.HostMethodDesc method
        11: .line 425
      StackMap locals: java.util.Map org.graalvm.collections.EconomicMap top java.util.Iterator
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 2
        12: .line 434
            aload 1 /* methodMap */
            areturn
        end local 1 // org.graalvm.collections.EconomicMap methodMap
        end local 0 // java.util.Map methods
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   13     0    methods  Ljava/util/Map<Ljava/lang/String;Lcom/oracle/truffle/polyglot/HostMethodDesc;>;
            1   13     1  methodMap  Lorg/graalvm/collections/EconomicMap<Ljava/lang/String;Lcom/oracle/truffle/polyglot/HostMethodDesc;>;
            3   11     2     method  Lcom/oracle/truffle/polyglot/HostMethodDesc;
            7    9     4          m  Lcom/oracle/truffle/polyglot/HostMethodDesc$SingleMethod;
    Signature: (Ljava/util/Map<Ljava/lang/String;Lcom/oracle/truffle/polyglot/HostMethodDesc;>;)Lorg/graalvm/collections/UnmodifiableEconomicMap<Ljava/lang/String;Lcom/oracle/truffle/polyglot/HostMethodDesc;>;
    MethodParameters:
         Name  Flags
      methods  
}
SourceFile: "HostClassDesc.java"
NestHost: com.oracle.truffle.polyglot.HostClassDesc
InnerClasses:
  private Members = com.oracle.truffle.polyglot.HostClassDesc$Members of com.oracle.truffle.polyglot.HostClassDesc
  private final MethodsBySignature = com.oracle.truffle.polyglot.HostClassDesc$MethodsBySignature of com.oracle.truffle.polyglot.HostClassDesc
  abstract SingleMethod = com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod of com.oracle.truffle.polyglot.HostMethodDesc