private Object tryConvertToHash( VirtualFrame frame, final int argumentCount, final Object lastArgument) { if (respondsToToHashProfile.profile(respondToToHash(frame, lastArgument))) { final Object converted = callToHash(frame, lastArgument); if (convertedIsHashProfile.profile(RubyGuards.isRubyHash(converted))) { RubyArguments.setArgument(frame, argumentCount - 1, converted); return converted; } } return null; }