iseq_s_disasm    1351 iseq.c             rb_define_singleton_method(rb_cISeq, "disasm", iseq_s_disasm, 1);
iseq_s_disasm    1352 iseq.c             rb_define_singleton_method(rb_cISeq, "disassemble", iseq_s_disasm, 1);