code: public Observable<List<AssemblyDefinitionInner>> listAsync(String resourceGroupName, String integrationAccountName) {
          return listWithServiceResponseAsync(resourceGroupName, integrationAccountName).map(new Func1<ServiceResponse<List<AssemblyDefinitionInner>>, List<AssemblyDefinitionInner>>() {
              @Override
              public List<AssemblyDefinitionInner> call(ServiceResponse<List<AssemblyDefinitionInner>> response) {
                  return response.body();
              }
          });
      }
docs: List the assemblies for an integration account.
  
  @param resourceGroupName The resource group name.
  @param integrationAccountName The integration account name.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the List&lt;AssemblyDefinitionInner&gt; object