code: public BoxRequestsMetadata.GetItemMetadata getFolderMetadataRequest(String id, String template) {
          BoxRequestsMetadata.GetItemMetadata request = new BoxRequestsMetadata.GetItemMetadata(getFolderMetadataUrl(id, template), mSession);
          return request;
      }
docs: Gets a request that retrieves the metadata for a specific template on a folder
  
  @param id    id of the folder to retrieve metadata for
  @param template    metadata template requested
  @return  request to retrieve metadata on a folder