How to use the aldjemy.core.Cache.sa_models function in aldjemy

# type of queries for alias, so we use 'read' type
        sa_model = type(model._meta.object_name, bases,
                        {'table': table,
                         'alias': router.db_for_read(model)})

        sa_models_by_table_names[table_name] = sa_model
        sa_models_by_django_models[model] = sa_model

    for model in models:
        sa_model = sa_models_by_django_models[model]
        table = tables[model._meta.db_table]
        attrs = _extract_model_attrs(model, sa_models_by_django_models)
        orm.mapper(sa_model, table, attrs)
        model.sa = sa_model

    Cache.sa_models = sa_models_by_django_models
    Cache.models = sa_models_by_table_names

def prepare_models():
    metadata = get_meta()
    models = [model for model in get_all_django_models() if not model._meta.proxy]
    Cache.sa_models = construct_models(metadata)
    cache_models = {}
    for model in models:
        table_name = (
            metadata.schema + '.' + model._meta.db_table
            if metadata.schema else model._meta.db_table
        )
        cache_models[table_name] = Cache.sa_models[model]
        model.sa = Cache.sa_models[model]

    # Assign the deprecated attribute to the cache all at once
    Cache.models = cache_models

def prepare_models():
    metadata = get_meta()
    models = [model for model in get_all_django_models() if not model._meta.proxy]
    Cache.sa_models = construct_models(metadata)
    cache_models = {}
    for model in models:
        table_name = (
            metadata.schema + '.' + model._meta.db_table
            if metadata.schema else model._meta.db_table
        )
        cache_models[table_name] = Cache.sa_models[model]
        model.sa = Cache.sa_models[model]

    # Assign the deprecated attribute to the cache all at once
    Cache.models = cache_models