docs: function(oExpression, sIdentifierName) {
                     /**
                      * The prefixed String value that is equivalent to the
                      * sequence of terminal symbols that constitute the
                      * encountered identifier name.
                      * @type {string}
                      */
                     var sPrefixed = EValuePrefixes.S_STRING + sIdentifierName;
  
                     return oSolutionBest.oPrimitiveValues.hasOwnProperty(
                         sPrefixed) &&
                         oSolutionBest.oPrimitiveValues[sPrefixed].nSaving > 0 ?
                         ['sub',
                          oWalker.walk(oExpression),
                          ['name',
                           oSolutionBest.oPrimitiveValues[sPrefixed].sName]] :
                         ['dot', oWalker.walk(oExpression), sIdentifierName];
                   }