code: def forward(self, x):
      # x: (N, C, H, W)
      x = self.patch_embed(x)
  
      x = self.layers[0](x)
      start_i = 1
  
      for i in range(start_i, len(self.layers)):
          layer = self.layers[i]
          x = layer(x)
      B, _, C = x.shape
      x = x.reshape((B, 64, 64, C))
      x = x.transpose((0, 3, 1, 2))
      x = self.neck(x)
      return x
  
imports: import itertools
  import paddle
  from paddle import nn
  from paddle.nn import functional
  from .common import LayerNorm2d
label_desc: Use image node_id 4 for calling the TinyViT obj's underlying member method code with example usage: obj.forward(x) and returns: x