code: def _SparseTensorPlaceholder(self, dtype=None):
      if dtype is None:
          dtype = dtypes.int32
      return sparse_tensor_lib.SparseTensor(
          array_ops.placeholder(dtypes.int64),
          array_ops.placeholder(dtype),
          array_ops.placeholder(dtypes.int64),
      )
  
imports: import numpy
  from tensorflow.python.client import session
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import sparse_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import benchmark
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the SparseTensorsMapTest obj's underlying member method code with example usage: obj._SparseTensorPlaceholder(dtype) and returns: sparse_tensor_lib