def build_lazy_init_tok2vec(*, width: int) -> Model[List[Doc], List[Floats2d]]:
    """tok2vec model of which the output size is only known after
    initialization. This implementation does not output meaningful
    embeddings, it is strictly for testing."""
    return Model(
        "lazy_init_tok2vec",
        lazy_init_tok2vec_forward,
        init=lazy_init_tok2vec_init,
        dims={"nO": None},
        attrs={"width": width},
    )
tok2vec model of which the output size is only known after
    initialization. This implementation does not output meaningful
    embeddings, it is strictly for testing.
spacy/tests/tok2vec.py