/// <summary>
 /// Updates the specified API of the API Management service instance.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The name of the resource group.
 /// </param>
 /// <param name='serviceName'>
 /// The name of the API Management service.
 /// </param>
 /// <param name='apiId'>
 /// API revision identifier. Must be unique in the current API Management
 /// service instance. Non-current revision has ;rev=n as a suffix where n is
 /// the revision number.
 /// </param>
 /// <param name='parameters'>
 /// API Update Contract parameters.
 /// </param>
 /// <param name='ifMatch'>
 /// ETag of the Entity. ETag should match the current entity state from the
 /// header response of the GET request or it should be * for unconditional
 /// update.
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task <ApiContract> UpdateAsync(this IApiOperations operations, string resourceGroupName, string serviceName, string apiId, ApiUpdateContract parameters, string ifMatch, CancellationToken cancellationToken = default(CancellationToken))
 {
     using (var _result = await operations.UpdateWithHttpMessagesAsync(resourceGroupName, serviceName, apiId, parameters, ifMatch, null, cancellationToken).ConfigureAwait(false))
     {
         return(_result.Body);
     }
 }
 /// <summary>
 /// Updates the specified API of the API Management service instance.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The name of the resource group.
 /// </param>
 /// <param name='serviceName'>
 /// The name of the API Management service.
 /// </param>
 /// <param name='apiId'>
 /// API revision identifier. Must be unique in the current API Management
 /// service instance. Non-current revision has ;rev=n as a suffix where n is
 /// the revision number.
 /// </param>
 /// <param name='parameters'>
 /// API Update Contract parameters.
 /// </param>
 /// <param name='ifMatch'>
 /// ETag of the Entity. ETag should match the current entity state from the
 /// header response of the GET request or it should be * for unconditional
 /// update.
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task UpdateAsync(this IApiOperations operations, string resourceGroupName, string serviceName, string apiId, ApiUpdateContract parameters, string ifMatch, CancellationToken cancellationToken = default(CancellationToken))
 {
     (await operations.UpdateWithHttpMessagesAsync(resourceGroupName, serviceName, apiId, parameters, ifMatch, null, cancellationToken).ConfigureAwait(false)).Dispose();
 }