https://www.graalvm.org/ 
class com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$5 implements org.graalvm.polyglot.proxy.ProxyExecutable
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$5
  super_class: java.lang.Object
{
  final com.oracle.truffle.llvm.tests.interop.LLVMInteropTest this$0;
    descriptor: Lcom/oracle/truffle/llvm/tests/interop/LLVMInteropTest;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.oracle.truffle.llvm.tests.interop.LLVMInteropTest);
    descriptor: (Lcom/oracle/truffle/llvm/tests/interop/LLVMInteropTest;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$5 this
         0: .line 235
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$5.this$0:Lcom/oracle/truffle/llvm/tests/interop/LLVMInteropTest;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$5 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/llvm/tests/interop/LLVMInteropTest$5;
    MethodParameters:
        Name  Flags
      this$0  final

  public java.lang.Object execute(org.graalvm.polyglot.Value[]);
    descriptor: ([Lorg/graalvm/polyglot/Value;)Ljava/lang/Object;
    flags: (0x0081) ACC_PUBLIC, ACC_VARARGS
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$5 this
        start local 1 // org.graalvm.polyglot.Value[] t
         0: .line 239
            ldc "argument count"
            ldc 2
            aload 1 /* t */
            arraylength
            i2l
            invokestatic org.junit.Assert.assertEquals:(Ljava/lang/String;JJ)V
         1: .line 240
            aload 1 /* t */
            iconst_0
            aaload
            invokevirtual org.graalvm.polyglot.Value.asDouble:()D
            aload 1 /* t */
            iconst_1
            aaload
            invokevirtual org.graalvm.polyglot.Value.asDouble:()D
            dadd
            invokestatic java.lang.Double.valueOf:(D)Ljava/lang/Double;
            areturn
        end local 1 // org.graalvm.polyglot.Value[] t
        end local 0 // com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$5 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/truffle/llvm/tests/interop/LLVMInteropTest$5;
            0    2     1     t  [Lorg/graalvm/polyglot/Value;
    MethodParameters:
      Name  Flags
      t     
}
SourceFile: "LLVMInteropTest.java"
EnclosingMethod: com.oracle.truffle.llvm.tests.interop.LLVMInteropTest.test012:()V
NestHost: com.oracle.truffle.llvm.tests.interop.LLVMInteropTest
InnerClasses:
  com.oracle.truffle.llvm.tests.interop.LLVMInteropTest$5