rb_digest_instance_hexdigest  352 ext/digest/digest.c     rb_str_buf_append(str, rb_digest_instance_hexdigest(0, 0, self));
rb_digest_instance_hexdigest  715 ext/digest/digest.c     rb_define_method(rb_mDigest_Instance, "hexdigest", rb_digest_instance_hexdigest, -1);