(version=None)
return get_backend().upgrade(version)
Migrate the database to `version` or the most recent version.
Migrate the database to `version` or the most recent version.
Migrate the database to version or the most recent version .
def upgrade(version=None):
    """Migrate the database to `version` or the most recent version."""
    return get_backend().upgrade(version)
def upgrade ( version = None ) : return get_backend ( ) . upgrade ( version )