class_docstr: Image to Patch Embedding
      
class_docstr_tok: ["Image","to","Patch","Embedding"]
code: def forward(self, x):
      x = self.proj(x)
      x_shape = paddle.shape(x)
      H, W = x_shape[2], x_shape[3]
      x = x.flatten(2).transpose([0, 2, 1])
      x = self.norm(x)
  
      return x, H, W
  
imports: import math
  from functools import partial
  import paddle
  import paddle.nn
  import paddle.nn.functional
  import paddle.nn.initializer
  from paddleseg.cvlibs import manager
  from paddleseg.utils import utils
  from paddleseg.models.backbones.transformer_utils import *
label_desc: Use image node_id 3 for calling the OverlapPatchEmbed obj's underlying member method code with example usage: obj.forward(x) and returns: x,  H,  W