src/transformers/models/convbert/modeling_convbert.py/ConvBertSelfOutput/forward
class ConvBertSelfOutput:    def forward(self, hidden_states, input_tensor):
        hidden_states = self.dense(hidden_states)
        hidden_states = self.dropout(hidden_states)
        hidden_states = self.LayerNorm(hidden_states + input_tensor)
        return hidden_states