@Override
		public String toString() {
			return String.format(
					"%s type=%s codePoint=%d propertyIntervalSet=%s parseLength=%d",
					super.toString(),
					type,
					codePoint,
					propertyIntervalSet,
					parseLength);
		}
Utility class to parse escapes like:
  \\n
  \\uABCD
  \\u{10ABCD}
  \\p{Foo}
  \\P{Bar}
  \\p{Baz=Blech}
  \\P{Baz=Blech}
tool/src/org/antlr/v4/misc/EscapeSequenceParsing.java