JumpMarker finish = JumpUtils.addJumpInstruction(b);
performRealCall.mark();
b.addInvokevirtual(Field.class.getName(), data.getMethodName(), data.getMethodDescriptor());
finish.mark();
it.writeByte(CodeIterator.NOP, index);
it.writeByte(CodeIterator.NOP, index + 1);
it.writeByte(CodeIterator.NOP, index + 2);
if (op == CodeIterator.INVOKEINTERFACE) {
// INVOKEINTERFACE has some extra parameters
it.writeByte(CodeIterator.NOP, index + 3);
it.writeByte(CodeIterator.NOP, index + 4);