class FullAdapterXL(nn.Module):
    r"""
    See [`T2IAdapter`] for more information.
    """

    def __init__(
        self,
        in_channels: int = 3,
        channels: List[int] = [320, 640, 1280, 1280],
        num_res_blocks: int = 2,
        downscale_factor: int = 16,
    ):
        super().__init__()

        in_channels = in_channels * downscale_factor**2

        self.unshuffle = nn.PixelUnshuffle(downscale_factor)
        self.conv_in = nn.Conv2d(in_channels, channels[0], kernel_size=3, padding=1)

        self.body = []
        # blocks to extract XL features with dimensions of [320, 64, 64], [640, 64, 64], [1280, 32, 32], [1280, 32, 32]
        for i in range(len(channels)):
            if i == 1:
                self.body.append(AdapterBlock(channels[i - 1], channels[i], num_res_blocks))
            elif i == 2:
                self.body.append(AdapterBlock(channels[i - 1], channels[i], num_res_blocks, down=True))
            else:
                self.body.append(AdapterBlock(channels[i], channels[i], num_res_blocks))

        self.body = nn.ModuleList(self.body)
        # XL has only one downsampling AdapterBlock.
        self.total_downscale_factor = downscale_factor * 2

    def forward(self, x: torch.Tensor) -> List[torch.Tensor]:
        r"""
        This method takes the tensor x as input and processes it through FullAdapterXL model. It consists of operations
        including unshuffling pixels, applying convolution layer and appending each block into list of feature tensors.
        """
        x = self.unshuffle(x)
        x = self.conv_in(x)

        features = []

        for block in self.body:
            x = block(x)
            features.append(x)

        return features
/Users/nielsrogge/Documents/python_projecten/diffusers/src/diffusers/models/adapter.py