/// <summary>
 /// Retrieves metric definitions of all metrics aggregated at the file server.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='deviceName'>
 /// The name of the device.
 /// </param>
 /// <param name='fileServerName'>
 /// The name of the file server.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The resource group name
 /// </param>
 /// <param name='managerName'>
 /// The manager name
 /// </param>
 public static IEnumerable <MetricDefinition> ListMetricDefinition(this IFileServersOperations operations, string deviceName, string fileServerName, string resourceGroupName, string managerName)
 {
     return(operations.ListMetricDefinitionAsync(deviceName, fileServerName, resourceGroupName, managerName).GetAwaiter().GetResult());
 }