code: def testGraphPlaceholder(self):
      with ops.Graph().as_default():
          x_tf = graph_only_ops.graph_placeholder(
              dtypes.int32, shape=(1,)
          )
          y_tf = math_ops.square(x_tf)
          with self.cached_session() as sess:
              x = np.array([42])
              y = sess.run(y_tf, feed_dict={x_tf: np.array([42])})
              self.assertAllClose(np.square(x), y)
  
file_path: tensorflow/tensorflow/python/eager/graph_only_ops_test.py
imports: import numpy
  from tensorflow.python.eager import graph_only_ops
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the GraphOnlyOpsTest obj's underlying member method code with example usage: obj.testGraphPlaceholder() without return types