class_docstr: Tests of GraphAttention layer
class_docstr_tok: ["Tests","of","GraphAttention","layer"]
code: def get_inputs(self):
      x_inp = [
          Input(batch_shape=(1, self.N, self.F_in)),
          Input(batch_shape=(1, self.N, self.N)),
      ]
  
      # duplicate input here for Test_GraphAttentionSparse to work
      return x_inp, x_inp
  
imports: import pytest
  import scipy.sparse
  import tensorflow
  from tensorflow import keras
  from tensorflow.keras import backend
  from tensorflow.keras.layers import Input
  from stellargraph.mapper import FullBatchNodeGenerator, FullBatchLinkGenerator, GraphSAGENodeGenerator
  from stellargraph.layer import *
  from ..test_utils.graphs import example_graph
  from ..None import test_utils
label_desc: Use image node_id 1 for calling the Test_GraphAttention obj's underlying member method code with example usage: obj.get_inputs() and returns: x_inp,  x_inp