public static Variable exist(final String idToSearch, final List<Variable> targetVariables) {
		Variable existingContextVariable = null;
		for (final Variable targetVariable : targetVariables) {
			if (targetVariable.getId() != null && targetVariable.getId().equals(idToSearch)) {
				existingContextVariable = targetVariable;
				break;
			}
		}
		return existingContextVariable;
	}