private static boolean isTokenSeparator(final char c) {
		return switch (c) {
			case '(', ')', ',' -> true;
			default -> false;
		};
	}
Tokenize the given parentheses string.

@param value the parentheses string
@return the parentheses string tokens
@throws NullPointerException if the given {@code value} is {@code null}
jenetics.ext/src/main/java/io/jenetics/ext/util/ParenthesesTreeParser.java