code: private static boolean matches(@Nonnull final Pattern pattern, @Nonnull final CharSequence chars) {
  		return pattern.matcher(chars).matches();
  	}
docs: Checks whether a character sequence matches against a specified pattern or not.
  
  @param pattern
  pattern, that the {@code chars} must correspond to
  @param chars
  a readable sequence of {@code char} values which should match the given pattern
  @return {@code true} when {@code chars} matches against the passed {@code pattern}, otherwise {@code false}