Dapper.Contrib new attribute for automatically set a datetime when inserting or updating a row

I was thinking at something that could create the insert or update query with GETDATE or GETUTCDATE (in case of sql server) for datetime properties decorated with an attribute.

So you dont have to manually update properties like ChangedDate CreatedDate

It could be useful for inattentive developer or when saving/updating a big list of entities

[AttributeUsage(AttributeTargets.Property)]
public class AutoDateAttribute : Attribute
{
    public AutoDateAttribute (QueryAction action, bool useUTC)
    {
        UseUTC = useUTC;
        Action = action;
    }
    public bool UseUTC { get; }
    public QueryAction Action { get; }
}
public enum QueryAction
{
    Insert,
    Update
}

No repository file or test is named. Start by locating Dapper.Contrib's insert and update query-generation entry points and existing attribute handling; clarify how SQL Server GETDATE/GETUTCDATE and the Insert/Update actions should work. Done means the proposed attribute automatically supplies the requested timestamps without manual property updates.