code: def testMethodCompletions(self):
      completions = completion.Completions(tc.NoDefaults().double)
      self.assertNotIn("--self", completions)
      self.assertIn("--count", completions)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from fire import completion
  from fire import test_components
  from fire import testutils
label_desc: Use image node_id 18 for calling the TabCompletionTest obj's underlying member method code with example usage: obj.testMethodCompletions() without return types