NG5- How to unsubscribe all the service in ngOnDestroy()

NG5- How to unsubscribe all the service in ngOnDestroy()
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To relase the component, need to unsubscribe in EveryComponent.component.ts
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import { Component, OnInit, OnDestroy } from '@angular/core';
import { Subscription } from 'rxjs/Subscription';

export class ComponentClass implements OnInit, OnDestroy

subscriptList: Array<Subscription> = [];

 getServiceData(){
 let subscription;
    subscription = this.myService.getData(this.id).subscribe( data =>{
      console.log(data)
 
  },
  (error) =>
  { console.log(error)
  }
);
this.addToSubscriptList(subscription);
}

 addToSubscriptList(subscription) {
    this.subscriptList.push(subscription);
  }
 
 
  ngOnDestroy() {
    this.subscriptionList.forEach(subscription => {
      subscription.unsubscribe();
    })
  }