import torch

from torch import nn


class DummyPooling(nn.Module):
    def forward(self, features: dict[str, torch.Tensor], **kwargs) -> dict[str, torch.Tensor]:
        return {'sentence_embedding': features['token_embeddings']}

    def save(self, save_dir: str, **kwargs) -> None:
        pass

    def load(load_dir: str, **kwargs) -> "DummyPooling":
        return DummyPooling()