class_docstr: The specific DWConv unsed in ConvFFN. 
code: def __init__(self, dim=768):
      super().__init__()
      self.dwconv = nn.Conv2D(
          dim, dim, 3, 1, 1, bias_attr=True, groups=dim
      )
  
imports: import math
  import warnings
  from functools import partial
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddleseg.models.backbones.transformer_utils import DropPath
  from paddleseg.models.layers.ms_deformable_attention import MSDeformAttn
label_desc: Use image node_id 1 to create a new DWConv object from inherited base classes: nn with example: obj = DWConv(dim)