/**
* @file NS Instance Primitive Component
*/
-import { isNullOrUndefined } from 'util';
import { Component, Injector, Input, OnInit } from '@angular/core';
import { AbstractControl, FormArray, FormBuilder, FormGroup, Validators } from '@angular/forms';
import { NgbActiveModal } from '@ng-bootstrap/ng-bootstrap';
import { KDUPRIMITIVELEVEL, NSData, VDUPRIMITIVELEVEL, VNFPROFILE } from 'NSDModel';
import { NSPrimitiveParams } from 'NSInstanceModel';
import { RestService } from 'RestService';
-import { SharedService } from 'SharedService';
+import { SharedService, isNullOrUndefined } from 'SharedService';
import { CONFIGPRIMITIVE, DF, VDUCONFIG, VDUPROFILE, VNFCONFIG, VNFD } from 'VNFDModel';
import { VNFInstanceDetails } from 'VNFInstanceModel';