code: public PagedList<PolicySetDefinitionInner> listByManagementGroup(final String managementGroupId) {
          ServiceResponse<Page<PolicySetDefinitionInner>> response = listByManagementGroupSinglePageAsync(managementGroupId).toBlocking().single();
          return new PagedList<PolicySetDefinitionInner>(response.body()) {
              @Override
              public Page<PolicySetDefinitionInner> nextPage(String nextPageLink) {
                  return listByManagementGroupNextSinglePageAsync(nextPageLink).toBlocking().single().body();
              }
          };
      }
docs: Retrieves all policy set definitions in management group.
  This operation retrieves a list of all the a policy set definition in the given management group.
  
  @param managementGroupId The ID of the management group.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws ErrorResponseException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the PagedList&lt;PolicySetDefinitionInner&gt; object if successful.