class_docstr: Spatial path
code: def forward(self, x):
      x = self.conv7x7(x)
      x = self.conv3x3_1(x)
      x = self.conv3x3_2(x)
      x = self.conv1x1(x)
  
      return x
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from pywick.models.segmentation.da_basenets.resnet import resnet18
label_desc: Use image node_id 2 for calling the SpatialPath obj's underlying member method code with example usage: obj.forward(x) and returns: x