Bug: DbSettingMapper adds DbConnection instead of TDbConnection

[tommasobertoni]

Bug Description

I'm using the generic Add<TDbConnection> overload of DbSettingMapper:

DbSettingMapper.Add<MyDbConnection>(dbSettings, true);

class MyDbConnection : DbConnection ...

Exception Message:

RepoDb.Exceptions.InvalidTypeException:
    'Type must be a subclass of 'System.Data.Common.DbConnection'.'

The problem:

The method is using StaticType.DbConnection instead of typeof(TDbConnection), so then the Guard check fails because: DbConnection is not a subclass of DbConnection.

Workaround:
Use the non-generic overload:

DbSettingMapper.Add(typeof(DbConnectionHolder), dbSettings, true);

Library Version:

RepoDb v1.12.6 and RepoDb.MySql v1.1.3