how to use http params in angular code example

Example 1: angular httpclient query params not working

getLogs(logNamespace): Observable<any> {

    // Setup log namespace query parameter
    let params = new HttpParams().set('logNamespace', logNamespace);

    return this._HttpClient.get(`${API_URL}/api/v1/data/logs`, { params: params })
}

Example 2: typescript interface to http params

public getData(p: ValueList) {
  return this.httpClient.get(`${url}`, { params: new HttpParams({ fromObject: p}) });
}