/**
* @file VNFComposerComponent
*/
- import { isNullOrUndefined } from 'util';
import { HttpHeaders } from '@angular/common/http';
import { Component, ElementRef, Injector, ViewChild, ViewEncapsulation } from '@angular/core';
import { ActivatedRoute, Router } from '@angular/router';
import * as HttpStatus from 'http-status-codes';
import * as jsyaml from 'js-yaml';
import { RestService } from 'RestService';
-import { SharedService } from 'SharedService';
+import { SharedService, isNullOrUndefined } from 'SharedService';
import { COMPOSERNODES, EXTCPD, GRAPHDETAILS, INTCPD, IVLD, Tick, TickPath, VDU, VDUINTCPD, VNFD, VNFDATA, VNIR } from 'VNFDModel';
/**