code: def testNA(self):
      args = {
          "records": ["2.0,NA,aa", "NA,5,bb", "3,6,NA"],
          "record_defaults": [[0.0], [0], [""]],
          "na_value": "NA",
      }
  
      expected_out = [[2.0, 0.0, 3], [0, 5, 6], [b"aa", b"bb", b""]]
  
      self._test(args, expected_out)
  
imports: import numpy
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import errors
  from tensorflow.python.ops import parsing_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 13 for calling the DecodeCSVOpTest obj's underlying member method code with example usage: obj.testNA() without return types