code: public Observable<IntegrationAccountMapInner> getAsync(String resourceGroupName, String integrationAccountName, String mapName) {
          return getWithServiceResponseAsync(resourceGroupName, integrationAccountName, mapName).map(new Func1<ServiceResponse<IntegrationAccountMapInner>, IntegrationAccountMapInner>() {
              @Override
              public IntegrationAccountMapInner call(ServiceResponse<IntegrationAccountMapInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets an integration account map.
  
  @param resourceGroupName The resource group name.
  @param integrationAccountName The integration account name.
  @param mapName The integration account map name.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the IntegrationAccountMapInner object