code: @ArgumentsChecked
  	@Throws({ IllegalNullArgumentException.class, IllegalNumberArgumentException.class })
  	public static <T extends CharSequence> T isNumeric(@Nonnull final T value) {
  		return isNumeric(value, EMPTY_ARGUMENT_NAME);
  	}
docs: Ensures that a readable sequence of {@code char} values is numeric. Numeric arguments consist only of the
  characters 0-9 and may start with 0 (compared to number arguments, which must be valid numbers - think of a bank
  account number).
  
  <p>
  We recommend to use the overloaded method {@link Check#isNumeric(CharSequence, String)} and pass as second
  argument the name of the parameter to enhance the exception message.
  
  @param value
  a readable sequence of {@code char} values which must be a number
  @return the given string argument
  @throws IllegalNumberArgumentException
  if the given argument {@code value} is no number