我应该在组件destroy - Angular2上完成BehaviorSubject吗？

import { Component, OnDestroy } from '@angular/core';
import { BehaviorSubject } from 'rxjs';

@Component({
  selector: 'app-my-component',
  template: '...',
})
export class MyComponent implements OnDestroy {
  private dataSubject: BehaviorSubject<string> = new BehaviorSubject<string>('initial value');
  private dataSubscription: Subscription;

  constructor() {
    this.dataSubscription = this.dataSubject.subscribe((data: string) => {
      // 处理数据更新
    });
  }

  ngOnDestroy(): void {
    this.dataSubscription.unsubscribe();
  }
}