code: public List<BackupManagementUsageInner> list(String vaultName, String resourceGroupName, String filter, String skipToken) {
          return listWithServiceResponseAsync(vaultName, resourceGroupName, filter, skipToken).toBlocking().single().body();
      }
docs: Fetches the backup management usage summaries of the vault.
  
  @param vaultName The name of the recovery services vault.
  @param resourceGroupName The name of the resource group where the recovery services vault is present.
  @param filter OData filter options.
  @param skipToken skipToken Filter.
  @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 List&lt;BackupManagementUsageInner&gt; object if successful.