code: def __init__(self, stride):
      super().__init__()
      self.stride = stride
      self.tmp = Identity()
  
imports: from functools import partial
  from collections import defaultdict
  import paddle
  import paddle.nn
  import paddle.nn.functional
  import paddleseg
  from paddleseg import utils
  from paddleseg.models import layers
  from paddleseg.cvlibs import manager
  from paddleseg.models.backbones.transformer_utils import Identity, DropPath
  from ppmatting.models.layers import MLFF
  from ppmatting.models.losses import MRSD, GradientLoss
label_desc: Use image node_id 1 to create a new PyramidPoolAgg object from inherited base classes: nn with example: obj = PyramidPoolAgg(stride)