/// <summary>
 /// Returns a list of metric definitions for a storage farm.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='resourceGroupName'>
 /// Resource group name.
 /// </param>
 /// <param name='farmId'>
 /// Farm Id.
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task <IPage <MetricDefinition> > ListMetricDefinitionsAsync(this IFarmsOperations operations, string resourceGroupName, string farmId, CancellationToken cancellationToken = default(CancellationToken))
 {
     using (var _result = await operations.ListMetricDefinitionsWithHttpMessagesAsync(resourceGroupName, farmId, null, cancellationToken).ConfigureAwait(false))
     {
         return(_result.Body);
     }
 }