/// <summary>
 /// Creates or updates a virtual network in the specified resource group.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The name of the resource group.
 /// </param>
 /// <param name='virtualNetworkName'>
 /// The name of the virtual network.
 /// </param>
 /// <param name='parameters'>
 /// Parameters supplied to the create or update virtual network operation
 /// </param>
 public static VirtualNetwork BeginCreateOrUpdate(this IVirtualNetworksOperations operations, string resourceGroupName, string virtualNetworkName, VirtualNetwork parameters)
 {
     return(operations.BeginCreateOrUpdateAsync(resourceGroupName, virtualNetworkName, parameters).GetAwaiter().GetResult());
 }