code: def __init__(self, in_channels, with_cab=False, **kwargs):
      super(SASTFPN, self).__init__()
      self.in_channels = in_channels
      self.with_cab = with_cab
      self.FPN_Down_Fusion = FPN_Down_Fusion(self.in_channels)
      self.FPN_Up_Fusion = FPN_Up_Fusion(self.in_channels)
      self.out_channels = 128
      self.cross_attention = Cross_Attention(self.out_channels)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import paddle
  from paddle import nn
  import paddle.nn.functional
  from paddle import ParamAttr
label_desc: Use image node_id 1 to create a new SASTFPN object from inherited base classes: nn with example: obj = SASTFPN(in_channels, with_cab)