/// <summary>
/// Delete entity from invoices
/// </summary>
/// <param name='operations'>
/// The operations group for this extension method.
/// </param>
/// <param name='invoiceid'>
/// key: invoiceid
/// </param>
/// <param name='ifMatch'>
/// ETag
/// </param>
public static void Delete(this IInvoices operations, string invoiceid, string ifMatch = default(string))
{
operations.DeleteAsync(invoiceid, ifMatch).GetAwaiter().GetResult();
}