I am trying to add headers to my API as follows,

import { HttpClient, HttpHeaders } from '@angular/common/http';
 constructor(private httpClient:HttpClient) {
    let headers = new HttpHeaders();
    this.headers = headers.set('test', 'test-headers');
  }

getInitialData(q: string) {
    return this.httpClient.get<InitialResponse>(`${this.serverUrl}/getInitialData?` + query, this.headers).toPromise();
  }

When I check in the network tab, I am not able to see the header ‘test’. Can anyone please suggest what I am missing here. Thanks.

When I check in the network tab, I am not able to see the header ‘test’. Can anyone please suggest what I am missing here. Thanks.