function getValueListQualifier(sTerm) {
		var sQualifier = getQualifier(sTerm, sValueListMapping);

		return sQualifier !== undefined ? sQualifier : getQualifier(sTerm, sValueList);
	}
Checks that the term is a ValueList or a ValueListMapping and determines the qualifier.

@param {string} sTerm
  The term
@returns {string|undefined}
  The qualifier or <code>undefined</code>, if the term is not as expected