/// <summary>
 /// Updates an existing elastic pool.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The name of the resource group that contains the resource. You can obtain
 /// this value from the Azure Resource Manager API or the portal.
 /// </param>
 /// <param name='serverName'>
 /// The name of the server.
 /// </param>
 /// <param name='elasticPoolName'>
 /// The name of the elastic pool to be updated.
 /// </param>
 /// <param name='parameters'>
 /// The required parameters for updating an elastic pool.
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task <ElasticPoolInner> BeginUpdateAsync(this IElasticPoolsOperations operations, string resourceGroupName, string serverName, string elasticPoolName, ElasticPoolUpdateInner parameters, CancellationToken cancellationToken = default(CancellationToken))
 {
     using (var _result = await operations.BeginUpdateWithHttpMessagesAsync(resourceGroupName, serverName, elasticPoolName, parameters, null, cancellationToken).ConfigureAwait(false))
     {
         return(_result.Body);
     }
 }