/// <summary>
 /// Adds the specified ColumnDefinition to the collection via POST.
 /// </summary>
 /// <param name="columnDefinition">The ColumnDefinition to add.</param>
 /// <param name="cancellationToken">The <see cref="CancellationToken"/> for the request.</param>
 /// <returns>The created ColumnDefinition.</returns>
 public System.Threading.Tasks.Task <ColumnDefinition> AddAsync(ColumnDefinition columnDefinition, CancellationToken cancellationToken)
 {
     this.ContentType = "application/json";
     this.Method      = "POST";
     return(this.SendAsync <ColumnDefinition>(columnDefinition, cancellationToken));
 }
 /// <summary>
 /// Adds the specified ColumnDefinition to the collection via POST.
 /// </summary>
 /// <param name="columnDefinition">The ColumnDefinition to add.</param>
 /// <returns>The created ColumnDefinition.</returns>
 public System.Threading.Tasks.Task <ColumnDefinition> AddAsync(ColumnDefinition columnDefinition)
 {
     return(this.AddAsync(columnDefinition, CancellationToken.None));
 }