code: public NamespaceResourceInner getByResourceGroup(String resourceGroupName, String namespaceName) {
          return getByResourceGroupWithServiceResponseAsync(resourceGroupName, namespaceName).toBlocking().single().body();
      }
docs: Returns the description for the specified namespace.
  
  @param resourceGroupName The name of the resource group.
  @param namespaceName The namespace name.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the NamespaceResourceInner object if successful.