https://openjdk.java.net/ 
public class com.sun.tools.sjavac.comp.dependencies.PublicApiCollector implements com.sun.source.util.TaskListener
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.sun.tools.sjavac.comp.dependencies.PublicApiCollector
  super_class: java.lang.Object
{
  private com.sun.tools.javac.util.Context context;
    descriptor: Lcom/sun/tools/javac/util/Context;
    flags: (0x0002) ACC_PRIVATE

  private final java.util.Set<com.sun.tools.javac.code.Symbol$ClassSymbol> classSymbols;
    descriptor: Ljava/util/Set;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Set<Lcom/sun/tools/javac/code/Symbol$ClassSymbol;>;

  private final java.util.Collection<javax.tools.JavaFileObject> explicitJFOs;
    descriptor: Ljava/util/Collection;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Collection<Ljavax/tools/JavaFileObject;>;

  private java.util.Map<java.lang.String, com.sun.tools.sjavac.pubapi.PubApi> explicitPubApis;
    descriptor: Ljava/util/Map;
    flags: (0x0002) ACC_PRIVATE
    Signature: Ljava/util/Map<Ljava/lang/String;Lcom/sun/tools/sjavac/pubapi/PubApi;>;

  private java.util.Map<java.lang.String, com.sun.tools.sjavac.pubapi.PubApi> nonExplicitPubApis;
    descriptor: Ljava/util/Map;
    flags: (0x0002) ACC_PRIVATE
    Signature: Ljava/util/Map<Ljava/lang/String;Lcom/sun/tools/sjavac/pubapi/PubApi;>;

  private static volatile int[] $SWITCH_TABLE$com$sun$source$util$TaskEvent$Kind;
    descriptor: [I
    flags: (0x104a) ACC_PRIVATE, ACC_STATIC, ACC_VOLATILE, ACC_SYNTHETIC

  public void <init>(com.sun.tools.javac.util.Context, java.util.Collection<javax.tools.JavaFileObject>);
    descriptor: (Lcom/sun/tools/javac/util/Context;Ljava/util/Collection;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
        start local 1 // com.sun.tools.javac.util.Context context
        start local 2 // java.util.Collection explicitJFOs
         0: .line 59
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 52
            aload 0 /* this */
            new java.util.HashSet
            dup
            invokespecial java.util.HashSet.<init>:()V
            putfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.classSymbols:Ljava/util/Set;
         2: .line 61
            aload 0 /* this */
            aload 1 /* context */
            putfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.context:Lcom/sun/tools/javac/util/Context;
         3: .line 62
            aload 0 /* this */
            aload 2 /* explicitJFOs */
            putfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.explicitJFOs:Ljava/util/Collection;
         4: .line 63
            return
        end local 2 // java.util.Collection explicitJFOs
        end local 1 // com.sun.tools.javac.util.Context context
        end local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    5     0          this  Lcom/sun/tools/sjavac/comp/dependencies/PublicApiCollector;
            0    5     1       context  Lcom/sun/tools/javac/util/Context;
            0    5     2  explicitJFOs  Ljava/util/Collection<Ljavax/tools/JavaFileObject;>;
    Signature: (Lcom/sun/tools/javac/util/Context;Ljava/util/Collection<Ljavax/tools/JavaFileObject;>;)V
    MethodParameters:
              Name  Flags
      context       
      explicitJFOs  

  public void finished(com.sun.source.util.TaskEvent);
    descriptor: (Lcom/sun/source/util/TaskEvent;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=4, args_size=2
        start local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
        start local 1 // com.sun.source.util.TaskEvent e
         0: .line 68
            invokestatic com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.$SWITCH_TABLE$com$sun$source$util$TaskEvent$Kind:()[I
            aload 1 /* e */
            invokevirtual com.sun.source.util.TaskEvent.getKind:()Lcom/sun/source/util/TaskEvent$Kind;
            invokevirtual com.sun.source.util.TaskEvent$Kind.ordinal:()I
            iaload
            tableswitch { // 3 - 7
                    3: 1
                    4: 14
                    5: 14
                    6: 14
                    7: 3
              default: 14
          }
         1: .line 70
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* e */
            invokevirtual com.sun.source.util.TaskEvent.getCompilationUnit:()Lcom/sun/source/tree/CompilationUnitTree;
            checkcast com.sun.tools.javac.tree.JCTree$JCCompilationUnit
            invokevirtual com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.collectClassSymbols:(Lcom/sun/tools/javac/tree/JCTree$JCCompilationUnit;)V
         2: .line 71
            goto 14
         3: .line 73
      StackMap locals:
      StackMap stack:
            ldc "Compilation finished"
            invokestatic com.sun.tools.sjavac.Log.debug:(Ljava/lang/String;)V
         4: .line 74
            ldc "Extracting pub APIs for the following symbols:"
            invokestatic com.sun.tools.sjavac.Log.debug:(Ljava/lang/String;)V
         5: .line 75
            aload 0 /* this */
            getfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.classSymbols:Ljava/util/Set;
            invokeinterface java.util.Set.iterator:()Ljava/util/Iterator;
            astore 3
            goto 8
      StackMap locals: com.sun.tools.sjavac.comp.dependencies.PublicApiCollector com.sun.source.util.TaskEvent top java.util.Iterator
      StackMap stack:
         6: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast com.sun.tools.javac.code.Symbol$ClassSymbol
            astore 2 /* cs */
        start local 2 // com.sun.tools.javac.code.Symbol$ClassSymbol cs
         7: .line 76
            new java.lang.StringBuilder
            dup
            ldc "    "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* cs */
            getfield com.sun.tools.javac.code.Symbol$ClassSymbol.fullname:Lcom/sun/tools/javac/util/Name;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokestatic com.sun.tools.sjavac.Log.debug:(Ljava/lang/String;)V
        end local 2 // com.sun.tools.javac.code.Symbol$ClassSymbol cs
         8: .line 75
      StackMap locals:
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 6
         9: .line 77
            aload 0 /* this */
            invokevirtual com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.extractPubApis:()V
        10: .line 82
            aload 0 /* this */
            getfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.context:Lcom/sun/tools/javac/util/Context;
            invokestatic com.sun.tools.sjavac.comp.PubAPIs.instance:(Lcom/sun/tools/javac/util/Context;)Lcom/sun/tools/sjavac/comp/PubAPIs;
            astore 2 /* pa */
        start local 2 // com.sun.tools.sjavac.comp.PubAPIs pa
        11: .line 83
            aload 0 /* this */
            aload 2 /* pa */
            aload 0 /* this */
            getfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.explicitJFOs:Ljava/util/Collection;
            iconst_1
            invokevirtual com.sun.tools.sjavac.comp.PubAPIs.getPubapis:(Ljava/util/Collection;Z)Ljava/util/Map;
            putfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.explicitPubApis:Ljava/util/Map;
        12: .line 84
            aload 0 /* this */
            aload 2 /* pa */
            aload 0 /* this */
            getfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.explicitJFOs:Ljava/util/Collection;
            iconst_0
            invokevirtual com.sun.tools.sjavac.comp.PubAPIs.getPubapis:(Ljava/util/Collection;Z)Ljava/util/Map;
            putfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.nonExplicitPubApis:Ljava/util/Map;
        13: .line 86
            ldc "done"
            invokestatic com.sun.tools.sjavac.Log.debug:(Ljava/lang/String;)V
        end local 2 // com.sun.tools.sjavac.comp.PubAPIs pa
        14: .line 89
      StackMap locals: com.sun.tools.sjavac.comp.dependencies.PublicApiCollector com.sun.source.util.TaskEvent
      StackMap stack:
            return
        end local 1 // com.sun.source.util.TaskEvent e
        end local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   15     0  this  Lcom/sun/tools/sjavac/comp/dependencies/PublicApiCollector;
            0   15     1     e  Lcom/sun/source/util/TaskEvent;
            7    8     2    cs  Lcom/sun/tools/javac/code/Symbol$ClassSymbol;
           11   14     2    pa  Lcom/sun/tools/sjavac/comp/PubAPIs;
    MethodParameters:
      Name  Flags
      e     

  private void collectClassSymbols(com.sun.tools.javac.tree.JCTree$JCCompilationUnit);
    descriptor: (Lcom/sun/tools/javac/tree/JCTree$JCCompilationUnit;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=4, args_size=2
        start local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
        start local 1 // com.sun.tools.javac.tree.JCTree$JCCompilationUnit cu
         0: .line 92
            aload 1 /* cu */
            invokevirtual com.sun.tools.javac.tree.JCTree$JCCompilationUnit.getTypeDecls:()Lcom/sun/tools/javac/util/List;
            invokevirtual com.sun.tools.javac.util.List.iterator:()Ljava/util/Iterator;
            astore 3
            goto 4
      StackMap locals: com.sun.tools.sjavac.comp.dependencies.PublicApiCollector com.sun.tools.javac.tree.JCTree$JCCompilationUnit top java.util.Iterator
      StackMap stack:
         1: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast com.sun.source.tree.Tree
            astore 2 /* t */
        start local 2 // com.sun.source.tree.Tree t
         2: .line 93
            aload 2 /* t */
            instanceof com.sun.tools.javac.tree.JCTree$JCClassDecl
            ifeq 4
         3: .line 94
            aload 0 /* this */
            getfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.classSymbols:Ljava/util/Set;
            aload 2 /* t */
            checkcast com.sun.tools.javac.tree.JCTree$JCClassDecl
            getfield com.sun.tools.javac.tree.JCTree$JCClassDecl.sym:Lcom/sun/tools/javac/code/Symbol$ClassSymbol;
            invokeinterface java.util.Set.add:(Ljava/lang/Object;)Z
            pop
        end local 2 // com.sun.source.tree.Tree t
         4: .line 92
      StackMap locals:
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 1
         5: .line 96
            return
        end local 1 // com.sun.tools.javac.tree.JCTree$JCCompilationUnit cu
        end local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lcom/sun/tools/sjavac/comp/dependencies/PublicApiCollector;
            0    6     1    cu  Lcom/sun/tools/javac/tree/JCTree$JCCompilationUnit;
            2    4     2     t  Lcom/sun/source/tree/Tree;
    MethodParameters:
      Name  Flags
      cu    

  private void extractPubApis();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
         0: .line 105
            aload 0 /* this */
            getfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.context:Lcom/sun/tools/javac/util/Context;
            invokestatic com.sun.tools.sjavac.comp.PubAPIs.instance:(Lcom/sun/tools/javac/util/Context;)Lcom/sun/tools/sjavac/comp/PubAPIs;
            astore 1 /* pubApis */
        start local 1 // com.sun.tools.sjavac.comp.PubAPIs pubApis
         1: .line 106
            aload 0 /* this */
            getfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.classSymbols:Ljava/util/Set;
            aload 1 /* pubApis */
            dup
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            pop
            invokedynamic accept(Lcom/sun/tools/sjavac/comp/PubAPIs;)Ljava/util/function/Consumer;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;)V
                  com/sun/tools/sjavac/comp/PubAPIs.visitPubapi(Ljavax/lang/model/element/Element;)V (5)
                  (Lcom/sun/tools/javac/code/Symbol$ClassSymbol;)V
            invokeinterface java.util.Set.forEach:(Ljava/util/function/Consumer;)V
         2: .line 107
            return
        end local 1 // com.sun.tools.sjavac.comp.PubAPIs pubApis
        end local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    3     0     this  Lcom/sun/tools/sjavac/comp/dependencies/PublicApiCollector;
            1    3     1  pubApis  Lcom/sun/tools/sjavac/comp/PubAPIs;

  public java.util.Map<java.lang.String, com.sun.tools.sjavac.pubapi.PubApi> getPubApis(boolean);
    descriptor: (Z)Ljava/util/Map;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
        start local 1 // boolean explicit
         0: .line 110
            iload 1 /* explicit */
            ifeq 1
            aload 0 /* this */
            getfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.explicitPubApis:Ljava/util/Map;
            goto 2
      StackMap locals:
      StackMap stack:
         1: aload 0 /* this */
            getfield com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.nonExplicitPubApis:Ljava/util/Map;
      StackMap locals:
      StackMap stack: java.util.Map
         2: areturn
        end local 1 // boolean explicit
        end local 0 // com.sun.tools.sjavac.comp.dependencies.PublicApiCollector this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0      this  Lcom/sun/tools/sjavac/comp/dependencies/PublicApiCollector;
            0    3     1  explicit  Z
    Signature: (Z)Ljava/util/Map<Ljava/lang/String;Lcom/sun/tools/sjavac/pubapi/PubApi;>;
    MethodParameters:
          Name  Flags
      explicit  

  static int[] $SWITCH_TABLE$com$sun$source$util$TaskEvent$Kind();
    descriptor: ()[I
    flags: (0x1008) ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=3, locals=1, args_size=0
         0: .line 49
            getstatic com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.$SWITCH_TABLE$com$sun$source$util$TaskEvent$Kind:[I
            dup
            ifnull 1
            areturn
      StackMap locals:
      StackMap stack: int[]
         1: pop
            invokestatic com.sun.source.util.TaskEvent$Kind.values:()[Lcom/sun/source/util/TaskEvent$Kind;
            arraylength
            newarray 10
            astore 0
         2: aload 0
            getstatic com.sun.source.util.TaskEvent$Kind.ANALYZE:Lcom/sun/source/util/TaskEvent$Kind;
            invokevirtual com.sun.source.util.TaskEvent$Kind.ordinal:()I
            iconst_3
            iastore
         3: goto 5
      StackMap locals: int[]
      StackMap stack: java.lang.NoSuchFieldError
         4: pop
      StackMap locals:
      StackMap stack:
         5: aload 0
            getstatic com.sun.source.util.TaskEvent$Kind.ANNOTATION_PROCESSING:Lcom/sun/source/util/TaskEvent$Kind;
            invokevirtual com.sun.source.util.TaskEvent$Kind.ordinal:()I
            iconst_5
            iastore
         6: goto 8
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
         7: pop
      StackMap locals:
      StackMap stack:
         8: aload 0
            getstatic com.sun.source.util.TaskEvent$Kind.ANNOTATION_PROCESSING_ROUND:Lcom/sun/source/util/TaskEvent$Kind;
            invokevirtual com.sun.source.util.TaskEvent$Kind.ordinal:()I
            bipush 6
            iastore
         9: goto 11
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        10: pop
      StackMap locals:
      StackMap stack:
        11: aload 0
            getstatic com.sun.source.util.TaskEvent$Kind.COMPILATION:Lcom/sun/source/util/TaskEvent$Kind;
            invokevirtual com.sun.source.util.TaskEvent$Kind.ordinal:()I
            bipush 7
            iastore
        12: goto 14
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        13: pop
      StackMap locals:
      StackMap stack:
        14: aload 0
            getstatic com.sun.source.util.TaskEvent$Kind.ENTER:Lcom/sun/source/util/TaskEvent$Kind;
            invokevirtual com.sun.source.util.TaskEvent$Kind.ordinal:()I
            iconst_2
            iastore
        15: goto 17
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        16: pop
      StackMap locals:
      StackMap stack:
        17: aload 0
            getstatic com.sun.source.util.TaskEvent$Kind.GENERATE:Lcom/sun/source/util/TaskEvent$Kind;
            invokevirtual com.sun.source.util.TaskEvent$Kind.ordinal:()I
            iconst_4
            iastore
        18: goto 20
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        19: pop
      StackMap locals:
      StackMap stack:
        20: aload 0
            getstatic com.sun.source.util.TaskEvent$Kind.PARSE:Lcom/sun/source/util/TaskEvent$Kind;
            invokevirtual com.sun.source.util.TaskEvent$Kind.ordinal:()I
            iconst_1
            iastore
        21: goto 23
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        22: pop
      StackMap locals:
      StackMap stack:
        23: aload 0
            dup
            putstatic com.sun.tools.sjavac.comp.dependencies.PublicApiCollector.$SWITCH_TABLE$com$sun$source$util$TaskEvent$Kind:[I
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
      Exception table:
        from    to  target  type
           2     3       4  Class java.lang.NoSuchFieldError
           5     6       7  Class java.lang.NoSuchFieldError
           8     9      10  Class java.lang.NoSuchFieldError
          11    12      13  Class java.lang.NoSuchFieldError
          14    15      16  Class java.lang.NoSuchFieldError
          17    18      19  Class java.lang.NoSuchFieldError
          20    21      22  Class java.lang.NoSuchFieldError
}
SourceFile: "PublicApiCollector.java"
InnerClasses:
  public final Kind = com.sun.source.util.TaskEvent$Kind of com.sun.source.util.TaskEvent
  public ClassSymbol = com.sun.tools.javac.code.Symbol$ClassSymbol of com.sun.tools.javac.code.Symbol
  public JCClassDecl = com.sun.tools.javac.tree.JCTree$JCClassDecl of com.sun.tools.javac.tree.JCTree
  public JCCompilationUnit = com.sun.tools.javac.tree.JCTree$JCCompilationUnit of com.sun.tools.javac.tree.JCTree
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles