code: public Observable<ProviderInner> getAsync(String resourceProviderNamespace, String expand) {
          return getWithServiceResponseAsync(resourceProviderNamespace, expand).map(new Func1<ServiceResponse<ProviderInner>, ProviderInner>() {
              @Override
              public ProviderInner call(ServiceResponse<ProviderInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets the specified resource provider.
  
  @param resourceProviderNamespace The namespace of the resource provider.
  @param expand The $expand query parameter. For example, to include property aliases in response, use $expand=resourceTypes/aliases.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ProviderInner object