code: def forward(self, x, H, W):
      x = self.fc1(x)
      x = self.dwconv(x, H, W)
      x = self.act(x)
      x = self.drop(x)
      x = self.fc2(x)
      x = self.drop(x)
      return x
  
imports: import math
  from functools import partial
  import paddle
  import paddle.nn
  import paddle.nn.functional
  import paddle.nn.initializer
  from paddleseg.cvlibs import manager
  from paddleseg.utils import utils
  from paddleseg.models.backbones.transformer_utils import *
label_desc: Use image node_id 3 for calling the Mlp obj's underlying member method code with example usage: obj.forward(x, H, W) and returns: x