src/transformers/models/rembert/modeling_rembert.py/RemBertEncoder/__init__
class RemBertEncoder:    def __init__(self, config):
        super().__init__()
        self.config = config

        self.embedding_hidden_mapping_in = nn.Linear(config.input_embedding_size, config.hidden_size)
        self.layer = nn.ModuleList([RemBertLayer(config) for _ in range(config.num_hidden_layers)])