rb_class_instance_methods  158 include/ruby/intern.h VALUE rb_class_instance_methods(int, VALUE*, VALUE);
rb_class_instance_methods 1716 object.c       	return rb_class_instance_methods(1, args, CLASS_OF(obj));
rb_class_instance_methods 2599 object.c           rb_define_method(rb_cModule, "instance_methods", rb_class_instance_methods, -1); /* in class.c */