/// <summary>
 /// Creates or updates a disk.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='resourceGroupName'>
 /// The name of the resource group.
 /// </param>
 /// <param name='diskName'>
 /// The name of the managed disk that is being created. The name can't be
 /// changed after the disk is created. Supported characters for the name are
 /// a-z, A-Z, 0-9 and _. The maximum name length is 80 characters.
 /// </param>
 /// <param name='disk'>
 /// Disk object supplied in the body of the Put disk operation.
 /// </param>
 public static Disk CreateOrUpdate(this IDisksOperations operations, string resourceGroupName, string diskName, Disk disk)
 {
     return(operations.CreateOrUpdateAsync(resourceGroupName, diskName, disk).GetAwaiter().GetResult());
 }