def load_template_source(self, template_name, template_dirs=None):
        raise NotImplementedError
Returns a new instance of this backend's SchemaEditor.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/template/loader.py/BaseLoader.load_template_source--crossover with--dataset/ETHPy150Open django/django/django/db/backends/base/base.py/BaseDatabaseWrapper.schema_editor