if (first) {
                    first = false;
                } else {
                    buf.append(',');
                }
                buf.append(escapeJson(entry.getKey())).append(':').append(escapeJson(entry.getValue()));
            }
            buf.append('}');
        } else if (obj instanceof Integer || obj instanceof Long || obj instanceof Float || obj instanceof Double) {

                    final Object obj = source.get(s);
                    if (obj instanceof Date) {
                        return false;
                    }
                    return !validateDateTimeString(source.get(s));
                }).collect(Collectors.toList()));
    }

    default boolean validateDateTimeString(final Object obj) {

				"application/ibe-pp-data",
				"application/iges",
				"application/illustrator",
				"application/im-iscomposing+xml",
				"application/index",
				"application/index.cmd",
				"application/index.obj",
				"application/index.response",
				"application/index.vnd",
				"application/iotp",
				"application/ipp",
				"application/isup",
				"application/java-archive",

            // Simulate decoding a small
            offset += 1;
            return 0; // Return a dummy value
        }

        @Override
        public void enc_ndr_referent(Object obj, int type) {
            // Simulate encoding a referent
            offset += 4;
        }

        // Note: dec_ndr_long_and_advance() method does not exist in NdrBuffer