/// <summary>
 /// Retrieves metric definitions of all metrics aggregated at the file share.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='deviceName'>
 /// The device name.
 /// </param>
 /// <param name='fileServerName'>
 /// The file server name.
 /// </param>
 /// <param name='shareName'>
 /// The file share name.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The resource group name
 /// </param>
 /// <param name='managerName'>
 /// The manager name
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task <IEnumerable <MetricDefinition> > ListMetricDefinitionAsync(this IFileSharesOperations operations, string deviceName, string fileServerName, string shareName, string resourceGroupName, string managerName, CancellationToken cancellationToken = default(CancellationToken))
 {
     using (var _result = await operations.ListMetricDefinitionWithHttpMessagesAsync(deviceName, fileServerName, shareName, resourceGroupName, managerName, null, cancellationToken).ConfigureAwait(false))
     {
         return(_result.Body);
     }
 }