Instantiate the DataSource for the given parameters

def get(self, **user_parameters):
        """Instantiate the DataSource for the given parameters"""
        plugin, open_args = self._create_open_args(user_parameters)
        data_source = plugin(**open_args)
        data_source.catalog_object = self._catalog
        data_source.name = self.name
        data_source.description = self._description
        data_source.cat = self._catalog

        return data_source