code: function addMixins(mixins, target, inherits, isNOTExtendingNative) {
      for (var
        source,
        init = [],
        i = 0; i < mixins.length; i++
      ) {
        source = transformMixin(mixins[i]);
        if (hOP.call(source, INIT)) {
          init.push(source[INIT]);
        }
        copyOwn(source, target, inherits, false, false, isNOTExtendingNative);
      }
      return init;
    }
docs: copy all imported enumerable methods and properties