def METHOD_NAME(self) -> nn.Module:
    """
    :return: MobileNet feature extractor module to be used for an SSD model
    """
    # Load MobileNet model
    model_key = "mobilenet-v{}".format(self._version)
    model = ModelRegistry.create(model_key, self._pretrained, self._pretrained_path)
    # increase feature map to 38x38
    if self._version == 2:
        model.sections[3][0].spatial.conv.stride = (1, 1)
        model.sections[5][0].spatial.conv.stride = (1, 1)
    feature_blocks = list(model.sections.children())
    return nn.Sequential(*feature_blocks)