public Builder clearAuthorizationHeader() {
      authorizationHeaderCase_ = 0;
      authorizationHeader_ = null;
      onChanged();
      return this;
    }
<pre>
HTTP request.

The task will be pushed to the worker as an HTTP request. An HTTP request
embodies a url, an http method, headers, body and authorization for the http
task.
</pre>

Protobuf type {@code google.cloud.tasks.v2beta2.HttpRequest}
java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/HttpRequest.java