https://www.graalvm.org/ 
final class com.oracle.truffle.api.debug.test.BreakpointDisposeListener implements java.util.function.Consumer<com.oracle.truffle.api.debug.Breakpoint>
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.api.debug.test.BreakpointDisposeListener
  super_class: java.lang.Object
{
  private final boolean[] notified;
    descriptor: [Z
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final com.oracle.truffle.api.debug.Breakpoint globalBreakpoint;
    descriptor: Lcom/oracle/truffle/api/debug/Breakpoint;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  static void register(boolean[], com.oracle.truffle.api.debug.Debugger, com.oracle.truffle.api.debug.Breakpoint);
    descriptor: ([ZLcom/oracle/truffle/api/debug/Debugger;Lcom/oracle/truffle/api/debug/Breakpoint;)V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=4, args_size=3
        start local 0 // boolean[] notified
        start local 1 // com.oracle.truffle.api.debug.Debugger debugger
        start local 2 // com.oracle.truffle.api.debug.Breakpoint globalBreakpoint
         0: .line 52
            new com.oracle.truffle.api.debug.test.BreakpointDisposeListener
            dup
            aload 0 /* notified */
            aload 2 /* globalBreakpoint */
            invokespecial com.oracle.truffle.api.debug.test.BreakpointDisposeListener.<init>:([ZLcom/oracle/truffle/api/debug/Breakpoint;)V
            astore 3 /* disposeBPListener */
        start local 3 // java.util.function.Consumer disposeBPListener
         1: .line 53
            aload 1 /* debugger */
            invokedynamic accept()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/oracle/truffle/api/debug/test/BreakpointDisposeListener.lambda$0(Lcom/oracle/truffle/api/debug/Breakpoint;)V (6)
                  (Lcom/oracle/truffle/api/debug/Breakpoint;)V
            invokevirtual com.oracle.truffle.api.debug.Debugger.addBreakpointAddedListener:(Ljava/util/function/Consumer;)V
         2: .line 54
            aload 1 /* debugger */
            aload 3 /* disposeBPListener */
            invokevirtual com.oracle.truffle.api.debug.Debugger.addBreakpointRemovedListener:(Ljava/util/function/Consumer;)V
         3: .line 55
            return
        end local 3 // java.util.function.Consumer disposeBPListener
        end local 2 // com.oracle.truffle.api.debug.Breakpoint globalBreakpoint
        end local 1 // com.oracle.truffle.api.debug.Debugger debugger
        end local 0 // boolean[] notified
      LocalVariableTable:
        Start  End  Slot               Name  Signature
            0    4     0           notified  [Z
            0    4     1           debugger  Lcom/oracle/truffle/api/debug/Debugger;
            0    4     2   globalBreakpoint  Lcom/oracle/truffle/api/debug/Breakpoint;
            1    4     3  disposeBPListener  Ljava/util/function/Consumer<Lcom/oracle/truffle/api/debug/Breakpoint;>;
    MethodParameters:
                  Name  Flags
      notified          
      debugger          
      globalBreakpoint  

  private void <init>(boolean[], com.oracle.truffle.api.debug.Breakpoint);
    descriptor: ([ZLcom/oracle/truffle/api/debug/Breakpoint;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.oracle.truffle.api.debug.test.BreakpointDisposeListener this
        start local 1 // boolean[] notified
        start local 2 // com.oracle.truffle.api.debug.Breakpoint globalBreakpoint
         0: .line 60
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 61
            aload 0 /* this */
            aload 1 /* notified */
            putfield com.oracle.truffle.api.debug.test.BreakpointDisposeListener.notified:[Z
         2: .line 62
            aload 0 /* this */
            aload 2 /* globalBreakpoint */
            putfield com.oracle.truffle.api.debug.test.BreakpointDisposeListener.globalBreakpoint:Lcom/oracle/truffle/api/debug/Breakpoint;
         3: .line 63
            return
        end local 2 // com.oracle.truffle.api.debug.Breakpoint globalBreakpoint
        end local 1 // boolean[] notified
        end local 0 // com.oracle.truffle.api.debug.test.BreakpointDisposeListener this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    4     0              this  Lcom/oracle/truffle/api/debug/test/BreakpointDisposeListener;
            0    4     1          notified  [Z
            0    4     2  globalBreakpoint  Lcom/oracle/truffle/api/debug/Breakpoint;
    MethodParameters:
                  Name  Flags
      notified          
      globalBreakpoint  

  public void accept(com.oracle.truffle.api.debug.Breakpoint);
    descriptor: (Lcom/oracle/truffle/api/debug/Breakpoint;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // com.oracle.truffle.api.debug.test.BreakpointDisposeListener this
        start local 1 // com.oracle.truffle.api.debug.Breakpoint breakpoint
         0: .line 67
            aload 0 /* this */
            getfield com.oracle.truffle.api.debug.test.BreakpointDisposeListener.notified:[Z
            iconst_0
            iconst_1
            bastore
         1: .line 68
            aload 0 /* this */
            getfield com.oracle.truffle.api.debug.test.BreakpointDisposeListener.globalBreakpoint:Lcom/oracle/truffle/api/debug/Breakpoint;
            aload 1 /* breakpoint */
            invokestatic org.junit.Assert.assertNotEquals:(Ljava/lang/Object;Ljava/lang/Object;)V
         2: .line 70
            aload 1 /* breakpoint */
            invokevirtual com.oracle.truffle.api.debug.Breakpoint.dispose:()V
         3: .line 71
            ldc "Public dispose must not be possible for global breakpoints."
            invokestatic org.junit.Assert.fail:(Ljava/lang/String;)V
         4: .line 72
            goto 6
      StackMap locals:
      StackMap stack: java.lang.IllegalStateException
         5: pop
         6: .line 75
      StackMap locals:
      StackMap stack:
            return
        end local 1 // com.oracle.truffle.api.debug.Breakpoint breakpoint
        end local 0 // com.oracle.truffle.api.debug.test.BreakpointDisposeListener this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    7     0        this  Lcom/oracle/truffle/api/debug/test/BreakpointDisposeListener;
            0    7     1  breakpoint  Lcom/oracle/truffle/api/debug/Breakpoint;
      Exception table:
        from    to  target  type
           2     4       5  Class java.lang.IllegalStateException
    MethodParameters:
            Name  Flags
      breakpoint  

  public void accept(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast com.oracle.truffle.api.debug.Breakpoint
            invokevirtual com.oracle.truffle.api.debug.test.BreakpointDisposeListener.accept:(Lcom/oracle/truffle/api/debug/Breakpoint;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private static void lambda$0(com.oracle.truffle.api.debug.Breakpoint);
    descriptor: (Lcom/oracle/truffle/api/debug/Breakpoint;)V
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.debug.Breakpoint breakpoint
         0: .line 53
            new java.lang.StringBuilder
            dup
            ldc "No new breakpoint is excpected to be added. Breakpoint = "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* breakpoint */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokestatic org.junit.Assert.fail:(Ljava/lang/String;)V
            return
        end local 0 // com.oracle.truffle.api.debug.Breakpoint breakpoint
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    1     0  breakpoint  Lcom/oracle/truffle/api/debug/Breakpoint;
}
Signature: Ljava/lang/Object;Ljava/util/function/Consumer<Lcom/oracle/truffle/api/debug/Breakpoint;>;
SourceFile: "BreakpointDisposeListener.java"
InnerClasses:
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles