copied initalize method body from original class and use statements along with it
created the ExtendedDb as an extension of the Db class
added the ExtendedDb class, an extension of the Codeception\Lib
\Driver\Db class, to the package
added the create method to the ExtendedDb class
added the ExtendedMySql class to the package as an extension of the Codeception\Lib\Driver\MySql class
added the insertOrUpdate method to the ExtendedMySql class
fixed the query syntax for the insertOrUpdate method
overridden the haveInDatabase method to optionally use the insertOrUpdate Db method
removed a comment