https://www.graalvm.org/ 
class com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject implements com.oracle.truffle.api.interop.TruffleObject
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject
  super_class: java.lang.Object
{
  protected int foo;
    descriptor: I
    flags: (0x0004) ACC_PROTECTED

  void <init>(int);
    descriptor: (I)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject this
        start local 1 // int i
         0: .line 1223
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 1224
            aload 0 /* this */
            iload 1 /* i */
            putfield com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject.foo:I
         2: .line 1225
            return
        end local 1 // int i
        end local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/truffle/llvm/tests/interop/LLVMInteropTest$ExecutableForeignObject;
            0    3     1     i  I
    MethodParameters:
      Name  Flags
      i     

  boolean isExecutable();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject this
         0: .line 1229
            iconst_1
            ireturn
        end local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/llvm/tests/interop/LLVMInteropTest$ExecutableForeignObject;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()

  java.lang.Object execute(java.lang.Object[], com.oracle.truffle.api.interop.InteropLibrary);
    descriptor: ([Ljava/lang/Object;Lcom/oracle/truffle/api/interop/InteropLibrary;)Ljava/lang/Object;
    flags: (0x0000) 
    Code:
      stack=3, locals=8, args_size=3
        start local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject this
        start local 1 // java.lang.Object[] arguments
        start local 2 // com.oracle.truffle.api.interop.InteropLibrary interop
         0: .line 1235
            aload 0 /* this */
            getfield com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject.foo:I
            istore 3 /* sum */
        start local 3 // int sum
         1: .line 1236
            aload 1 /* arguments */
            dup
            astore 7
            arraylength
            istore 6
            iconst_0
            istore 5
            goto 5
      StackMap locals: com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject java.lang.Object[] com.oracle.truffle.api.interop.InteropLibrary int top int int java.lang.Object[]
      StackMap stack:
         2: aload 7
            iload 5
            aaload
            astore 4 /* arg */
        start local 4 // java.lang.Object arg
         3: .line 1237
            iload 3 /* sum */
            aload 2 /* interop */
            aload 4 /* arg */
            invokevirtual com.oracle.truffle.api.interop.InteropLibrary.asInt:(Ljava/lang/Object;)I
            iadd
            istore 3 /* sum */
        end local 4 // java.lang.Object arg
         4: .line 1236
            iinc 5 1
      StackMap locals:
      StackMap stack:
         5: iload 5
            iload 6
            if_icmplt 2
         6: .line 1239
            iload 3 /* sum */
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            areturn
        end local 3 // int sum
        end local 2 // com.oracle.truffle.api.interop.InteropLibrary interop
        end local 1 // java.lang.Object[] arguments
        end local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    7     0       this  Lcom/oracle/truffle/llvm/tests/interop/LLVMInteropTest$ExecutableForeignObject;
            0    7     1  arguments  [Ljava/lang/Object;
            0    7     2    interop  Lcom/oracle/truffle/api/interop/InteropLibrary;
            1    7     3        sum  I
            3    4     4        arg  Ljava/lang/Object;
    Exceptions:
      throws com.oracle.truffle.api.interop.UnsupportedMessageException
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    RuntimeInvisibleParameterAnnotations: 
      0:
      1:
        com.oracle.truffle.api.library.CachedLibrary(limit = "3")
    MethodParameters:
           Name  Flags
      arguments  
      interop    
}
SourceFile: "LLVMInteropTest.java"
NestHost: com.oracle.truffle.llvm.tests.interop.LLVMInteropTest
InnerClasses:
  ExecutableForeignObject = com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$ExecutableForeignObject of com.oracle.truffle.llvm.tests.interop.LLVMInteropTest
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportLibrary(value = Lcom/oracle/truffle/api/interop/InteropLibrary;)