https://www.graalvm.org/ 
final class com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl extends com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$MHBase
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl
  super_class: com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$MHBase
{
  private final java.lang.reflect.Constructor<?> reflectionConstructor;
    descriptor: Ljava/lang/reflect/Constructor;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/lang/reflect/Constructor<*>;

  void <init>(java.lang.reflect.Constructor<?>);
    descriptor: (Ljava/lang/reflect/Constructor;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl this
        start local 1 // java.lang.reflect.Constructor reflectionConstructor
         0: .line 365
            aload 0 /* this */
            aload 1 /* reflectionConstructor */
            invokespecial com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$MHBase.<init>:(Ljava/lang/reflect/Executable;)V
         1: .line 366
            aload 0 /* this */
            aload 1 /* reflectionConstructor */
            putfield com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl.reflectionConstructor:Ljava/lang/reflect/Constructor;
         2: .line 367
            return
        end local 1 // java.lang.reflect.Constructor reflectionConstructor
        end local 0 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl this
      LocalVariableTable:
        Start  End  Slot                   Name  Signature
            0    3     0                   this  Lcom/oracle/truffle/polyglot/HostMethodDesc$SingleMethod$ConstructorMHImpl;
            0    3     1  reflectionConstructor  Ljava/lang/reflect/Constructor<*>;
    Signature: (Ljava/lang/reflect/Constructor<*>;)V
    MethodParameters:
                       Name  Flags
      reflectionConstructor  

  public java.lang.reflect.Constructor<?> getReflectionMethod();
    descriptor: ()Ljava/lang/reflect/Constructor;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl this
         0: .line 371
            invokestatic com.oracle.truffle.api.CompilerAsserts.neverPartOfCompilation:()V
         1: .line 372
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl.reflectionConstructor:Ljava/lang/reflect/Constructor;
            areturn
        end local 0 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/truffle/polyglot/HostMethodDesc$SingleMethod$ConstructorMHImpl;
    Signature: ()Ljava/lang/reflect/Constructor<*>;

  public java.lang.Class<?> getReturnType();
    descriptor: ()Ljava/lang/Class;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl this
         0: .line 377
            aload 0 /* this */
            invokevirtual com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl.getReflectionMethod:()Ljava/lang/reflect/Constructor;
            invokevirtual java.lang.reflect.Constructor.getDeclaringClass:()Ljava/lang/Class;
            areturn
        end local 0 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/polyglot/HostMethodDesc$SingleMethod$ConstructorMHImpl;
    Signature: ()Ljava/lang/Class<*>;

  protected java.lang.invoke.MethodHandle makeMethodHandle();
    descriptor: ()Ljava/lang/invoke/MethodHandle;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl this
         0: .line 382
            invokestatic com.oracle.truffle.api.CompilerAsserts.neverPartOfCompilation:()V
         1: .line 384
            invokestatic java.lang.invoke.MethodHandles.publicLookup:()Ljava/lang/invoke/MethodHandles$Lookup;
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl.reflectionConstructor:Ljava/lang/reflect/Constructor;
            invokevirtual java.lang.invoke.MethodHandles$Lookup.unreflectConstructor:(Ljava/lang/reflect/Constructor;)Ljava/lang/invoke/MethodHandle;
            astore 1 /* methodHandle */
        start local 1 // java.lang.invoke.MethodHandle methodHandle
         2: .line 385
            aload 1 /* methodHandle */
            iconst_1
            aload 0 /* this */
            invokevirtual com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl.getParameterCount:()I
            invokestatic com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl.adaptSignature:(Ljava/lang/invoke/MethodHandle;ZI)Ljava/lang/invoke/MethodHandle;
         3: areturn
        end local 1 // java.lang.invoke.MethodHandle methodHandle
         4: .line 386
      StackMap locals:
      StackMap stack: java.lang.IllegalAccessException
            astore 1 /* e */
        start local 1 // java.lang.IllegalAccessException e
         5: .line 387
            new java.lang.IllegalStateException
            dup
            aload 1 /* e */
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 1 // java.lang.IllegalAccessException e
        end local 0 // com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    6     0          this  Lcom/oracle/truffle/polyglot/HostMethodDesc$SingleMethod$ConstructorMHImpl;
            2    4     1  methodHandle  Ljava/lang/invoke/MethodHandle;
            5    6     1             e  Ljava/lang/IllegalAccessException;
      Exception table:
        from    to  target  type
           1     3       4  Class java.lang.IllegalAccessException

  public java.lang.reflect.Executable getReflectionMethod();
    descriptor: ()Ljava/lang/reflect/Executable;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl.getReflectionMethod:()Ljava/lang/reflect/Constructor;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "HostMethodDesc.java"
NestHost: com.oracle.truffle.polyglot.HostMethodDesc
InnerClasses:
  abstract SingleMethod = com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod of com.oracle.truffle.polyglot.HostMethodDesc
  private final ConstructorMHImpl = com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$ConstructorMHImpl of com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod
  abstract MHBase = com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod$MHBase of com.oracle.truffle.polyglot.HostMethodDesc$SingleMethod
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles