code: public Observable<Page<JobAgentInner>> listByServerAsync(final String resourceGroupName, final String serverName) {
          return listByServerWithServiceResponseAsync(resourceGroupName, serverName)
              .map(new Func1<ServiceResponse<Page<JobAgentInner>>, Page<JobAgentInner>>() {
                  @Override
                  public Page<JobAgentInner> call(ServiceResponse<Page<JobAgentInner>> response) {
                      return response.body();
                  }
              });
      }
docs: Gets a list of job agents in a server.
  
  @param resourceGroupName The name of the resource group that contains the resource. You can obtain this value from the Azure Resource Manager API or the portal.
  @param serverName The name of the server.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;JobAgentInner&gt; object