/// <summary>
 /// Returns a JSON Object with an operation inside a block
 /// </summary>
 /// <param name="block">Block number</param>
 /// <param name="opblock">Operation (0..operations-1) of this block</param>
 /// <returns>JSON Object with a "Operation Object"</returns>
 public static Task <Operation> GetBlockOperationAsync(this IPascalCoinClient client, uint block, uint opblock)
 {
     return(Task.Run(() => client.GetBlockOperation(block, opblock)));
 }