ecerr_destination_encoding_name 4119 transcode.c        rb_define_method(rb_eUndefinedConversionError, "destination_encoding_name", ecerr_destination_encoding_name, 0);
ecerr_destination_encoding_name 4125 transcode.c        rb_define_method(rb_eInvalidByteSequenceError, "destination_encoding_name", ecerr_destination_encoding_name, 0);