code: def testValidateValidSlicingStrings(self):
      self.assertTrue(command_parser.validate_slicing_string("[1]"))
      self.assertTrue(command_parser.validate_slicing_string("[2,3]"))
      self.assertTrue(
          command_parser.validate_slicing_string("[4, 5, 6]")
      )
      self.assertTrue(
          command_parser.validate_slicing_string("[7,:, :]")
      )
  
imports: import sys
  from tensorflow.python.debug.cli import command_parser
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 1 for calling the ValidateSlicingStringTest obj's underlying member method code with example usage: obj.testValidateValidSlicingStrings() without return types