code: function applyInitiatedOnceArgs(mixins, rtn) {
  
          /**
           * added once initiated mixins to return array
           */
          function addInitiatedOnce(name, mixin, params) {
              mixin = mixin.call(this, params || []);
              // find the name placeholder in the return arr and replace it with the mixin
              var index = rtn.indexOf(name);
              rtn.splice(index, 1, mixin);
          }
  
          for (var m in mixins) {
              if (mixins.hasOwnProperty(m)) {
                  addInitiatedOnce(m, _mixins[m], mixins[m]);
              }
          }
      }
docs: add the mixins that should be once initiated to the normalized mixin list
  @param mixins {Object} hash of mixins keys and list of its parameters
  @param rtn {Array} the normalized return array