public bool Remove(string key)
{
#region Contracts
if (string.IsNullOrEmpty(key) == true)
{
throw new ArgumentNullException();
}
#endregion
// Require
if (_repository.ContainsKey(key) == false)
{
return(false);
}
// Repository
_repository.Remove(key);
// Return
return(true);
}
public bool ContainsKey(string groupName)
{
#region Contracts
if (string.IsNullOrEmpty(groupName) == true)
{
throw new ArgumentNullException();
}
#endregion
// Repository
return(_repository.ContainsKey(groupName));
}