public class com.oracle.truffle.nfi.test.interop.TestCallback implements com.oracle.truffle.api.interop.TruffleObject
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.oracle.truffle.nfi.test.interop.TestCallback
  super_class: java.lang.Object
{
  private final int arity;
    descriptor: I
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final com.oracle.truffle.nfi.test.interop.TestCallback$Function function;
    descriptor: Lcom/oracle/truffle/nfi/test/interop/TestCallback$Function;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public void <init>(int, com.oracle.truffle.nfi.test.interop.TestCallback$Function);
    descriptor: (ILcom/oracle/truffle/nfi/test/interop/TestCallback$Function;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.oracle.truffle.nfi.test.interop.TestCallback this
        start local 1 // int arity
        start local 2 // com.oracle.truffle.nfi.test.interop.TestCallback$Function function
         0: .line 61
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 62
            aload 0 /* this */
            iload 1 /* arity */
            putfield com.oracle.truffle.nfi.test.interop.TestCallback.arity:I
         2: .line 63
            aload 0 /* this */
            aload 2 /* function */
            putfield com.oracle.truffle.nfi.test.interop.TestCallback.function:Lcom/oracle/truffle/nfi/test/interop/TestCallback$Function;
         3: .line 64
            return
        end local 2 // com.oracle.truffle.nfi.test.interop.TestCallback$Function function
        end local 1 // int arity
        end local 0 // com.oracle.truffle.nfi.test.interop.TestCallback this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lcom/oracle/truffle/nfi/test/interop/TestCallback;
            0    4     1     arity  I
            0    4     2  function  Lcom/oracle/truffle/nfi/test/interop/TestCallback$Function;
    MethodParameters:
          Name  Flags
      arity     
      function  

  boolean isExecutable();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.nfi.test.interop.TestCallback this
         0: .line 68
            iconst_1
            ireturn
        end local 0 // com.oracle.truffle.nfi.test.interop.TestCallback this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/nfi/test/interop/TestCallback;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()

  java.lang.Object execute(java.lang.Object[]);
    descriptor: ([Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0080) ACC_VARARGS
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // com.oracle.truffle.nfi.test.interop.TestCallback this
        start local 1 // java.lang.Object[] args
         0: .line 74
            aload 1 /* args */
            arraylength
            aload 0 /* this */
            getfield com.oracle.truffle.nfi.test.interop.TestCallback.arity:I
            if_icmpne 5
         1: .line 75
            aload 0 /* this */
            getfield com.oracle.truffle.nfi.test.interop.TestCallback.function:Lcom/oracle/truffle/nfi/test/interop/TestCallback$Function;
            aload 1 /* args */
            invokeinterface com.oracle.truffle.nfi.test.interop.TestCallback$Function.call:([Ljava/lang/Object;)Ljava/lang/Object;
            astore 2 /* ret */
        start local 2 // java.lang.Object ret
         2: .line 76
            aload 2 /* ret */
            ifnonnull 4
         3: .line 77
            new com.oracle.truffle.nfi.test.interop.NullObject
            dup
            invokespecial com.oracle.truffle.nfi.test.interop.NullObject.<init>:()V
            areturn
         4: .line 79
      StackMap locals: java.lang.Object
      StackMap stack:
            aload 2 /* ret */
            areturn
        end local 2 // java.lang.Object ret
         5: .line 82
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.truffle.nfi.test.interop.TestCallback.arity:I
            aload 1 /* args */
            arraylength
            invokestatic com.oracle.truffle.api.interop.ArityException.create:(II)Lcom/oracle/truffle/api/interop/ArityException;
            athrow
        end local 1 // java.lang.Object[] args
        end local 0 // com.oracle.truffle.nfi.test.interop.TestCallback this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lcom/oracle/truffle/nfi/test/interop/TestCallback;
            0    6     1  args  [Ljava/lang/Object;
            2    5     2   ret  Ljava/lang/Object;
    Exceptions:
      throws com.oracle.truffle.api.interop.ArityException
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.CompilerDirectives$TruffleBoundary()
      com.oracle.truffle.api.library.ExportMessage()
    MethodParameters:
      Name  Flags
      args  
}
SourceFile: "TestCallback.java"
NestMembers:
  com.oracle.truffle.nfi.test.interop.TestCallback$Function
InnerClasses:
  public abstract TruffleBoundary = com.oracle.truffle.api.CompilerDirectives$TruffleBoundary of com.oracle.truffle.api.CompilerDirectives
  public abstract Function = com.oracle.truffle.nfi.test.interop.TestCallback$Function of com.oracle.truffle.nfi.test.interop.TestCallback
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportLibrary(value = Lcom/oracle/truffle/api/interop/InteropLibrary;)