code: def test_infinite(self):
      self.assertEqual("", repr(row_range.infinite()))
  
imports: from tensorflow_io.python.ops import core_ops
  import tensorflow_io.python.ops.bigtable.bigtable_row_range
  import tensorflow_io.python.ops.bigtable.bigtable_row_set
  from tensorflow import test
label_desc: Use image node_id 1 for calling the RowRangeTest obj's underlying member method code with example usage: obj.test_infinite() without return types