src/transformers/models/layoutlmv2/modeling_layoutlmv2.py/LayoutLMv2Layer/__init__
class LayoutLMv2Layer:    def __init__(self, config):
        super().__init__()
        self.chunk_size_feed_forward = config.chunk_size_feed_forward
        self.seq_len_dim = 1
        self.attention = LayoutLMv2Attention(config)
        self.intermediate = LayoutLMv2Intermediate(config)
        self.output = LayoutLMv2Output(config)