Class AbstractFoo

test/ext/test_mutable.py:1251–1259

        Base = declarative_base(metadata=metadata)

        class AbstractFoo(Base):
            __abstract__ = True

            id = Column(
                Integer, primary_key=True, test_needs_autoincrement=True
            )
            data = Column(MutableDict.as_mutable(JSONEncodedDict))
            non_mutable_data = Column(JSONEncodedDict)
            unrelated_data = Column(String(50))

        class Foo(AbstractFoo):
            __tablename__ = class="st">"foo"