@Override
	public Date getDateWithPattern(String name, String pattern) {
		try {
			return getDateWithPattern(indexOf(name), pattern);
		}
		catch (IllegalArgumentException e) {
			throw new IllegalArgumentException(e.getMessage() + ", name: [" + name + "]");
		}
	}
@param index the index of the value
@return the converted raw value, trimmed
spring-xd-tuple/src/main/java/org/springframework/xd/tuple/DefaultTuple.java