class_docstr: Implement of SGC
class_docstr_tok: ["Implement","of","SGC"]
code: def __init__(self, config, num_class):
      self.num_class = num_class
      self.num_layers = config.get("num_layers", 1)
  
imports: import pgl
  import paddle.fluid.layers
  import pgl.layers.conv
label_desc: Use image node_id 1 to create a new SGC object from inherited base classes: object with example: obj = SGC(config, num_class)