public async Task<BoxCollection<BoxCollaboration>> GetCollaborationsAsync(string id, List<string> fields = null)
{
id.ThrowIfNullOrWhiteSpace("id");
BoxRequest request = new BoxRequest(_config.FoldersEndpointUri, string.Format(Constants.CollaborationsPathString, id))
.Param(ParamFields, fields);
IBoxResponse<BoxCollection<BoxCollaboration>> response = await ToResponseAsync<BoxCollection<BoxCollaboration>>(request).ConfigureAwait(false);
return response.ResponseObject;
}