private static TColumn CreateColumn <TColumnGroup, TColumn>(Mounter <TColumnGroup, TColumn> mounter, Action <TColumn> initializer)
where TColumnGroup : Projection
where TColumn : Column, new()
{
var result = Column.Create <TColumn>(mounter.OriginalDeclaringType, mounter.OriginalName);
var parent = mounter.Parent;
result.Construct(parent.ParentModel, mounter.DeclaringType, parent.GetColumnName(mounter), ColumnKind.ProjectionMember, null, initializer);
parent.Add(result);
return(result);
}
