/// <summary>
/// Gets domains, optionally filtered by name.
/// </summary>
/// <param name="filter">A string to filter domain names with.</param>
/// <returns>Returns domains.</returns>
public async Task <IEnumerable <Domain> > GetDomains(string filter = null)
{
if (filter == null)
{
return(await DomainRepository.GetDomains());
}
else
{
return(await DomainRepository.SearchDomainsByName(filter));
}
}