@Override
	public boolean getBoolean(int index, String trueValue) {
		Assert.notNull(trueValue, "'trueValue' cannot be null.");
		String value = readAndTrim(index);
		return trueValue.equals(value);

	}
@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