iseqw_s_disasm   2462 iseq.c             rb_define_singleton_method(rb_cISeq, "disasm", iseqw_s_disasm, 1);
iseqw_s_disasm   2463 iseq.c             rb_define_singleton_method(rb_cISeq, "disassemble", iseqw_s_disasm, 1);