function toString(oParameterValue, bComplex, bRaw) {
				return Basics.resultToString(Expression.wrapExpression(oParameterValue), true,
					bComplex, bRaw);
			}
Handling of "14.5.6 Expression edm:If".

@param {object} oPathValue
  path and value information pointing to the parameter array (see Expression object).
  The first parameter element is the conditional expression and must evaluate to an
  Edm.Boolean. The second and third child elements are the expressions, which are
  evaluated conditionally.
@param {boolean} [bInCollection]
  Whether "14.5.6 Expression edm:If" appears as a direct child of
  "14.5.5 Expression edm:Collection" and thus needs no third child element ("else")
@returns {sap.ui.base.SyncPromise}
  a sync promise which resolves with the result object or is rejected with an error