class_docstr: GIN
code: def __init__(self, hidden_size, act, use_degree_norm=False):
      super(GIN, self).__init__()
      self.lin = nn.Linear(hidden_size, hidden_size)
      self.act = act
      self.use_degree_norm = use_degree_norm
  
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  import pgl
  import math
  from .None import model_util
label_desc: Use image node_id 1 to create a new GIN object from inherited base classes: nn with example: obj = GIN(hidden_size, act, use_degree_norm)