code: public Observable<RunCommandResultInner> runCommandAsync(String resourceGroupName, String vmName, RunCommandInput parameters) {
          return runCommandWithServiceResponseAsync(resourceGroupName, vmName, parameters).map(new Func1<ServiceResponse<RunCommandResultInner>, RunCommandResultInner>() {
              @Override
              public RunCommandResultInner call(ServiceResponse<RunCommandResultInner> response) {
                  return response.body();
              }
          });
      }
docs: Run command on the VM.
  
  @param resourceGroupName The name of the resource group.
  @param vmName The name of the virtual machine.
  @param parameters Parameters supplied to the Run command operation.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable for the request