Update spec for extending multiple feature lyrs
Update spec for extending multiple feature lyrs

EnzeZY/offline-editor-js,EnzeZY/offline-editor-js,andygup/offline-editor-js,Esri/offline-editor-js,andygup/offline-editor-js,Esri/offline-editor-js,eregn001/TPSEricTest1,eregn001/test5,EnzeZY/offline-editor-js,eregn001/test5,andygup/offline-editor-js,Esri/offline-editor-js,eregn001/TPSEricTest1,eregn001/test5,eregn001/TPSEricTest1