class_docstr: Linear Embedding
code: def forward(self, x):
      x = x.flatten(2).transpose([0, 2, 1])
      x = self.proj(x)
      return x
  
file_path: PaddleSeg/paddleseg/models/segformer.py
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  import numpy
  from paddleseg.cvlibs import manager
  from paddleseg.models import layers
  from paddleseg.utils import utils
label_desc: Use image node_id 2 for calling the MLP obj's underlying member method code with example usage: obj.forward(x) and returns: x