code: def testHelpTextFunctionMixedDefaults(self):
      component = tc.py3.HelpTextComponent().identity
      t = trace.FireTrace(component, name="FunctionMixedDefaults")
      output = helptext.HelpText(component, trace=t)
      self.assertIn("NAME\n    FunctionMixedDefaults", output)
      self.assertIn("FunctionMixedDefaults <flags>", output)
      self.assertIn("--alpha=ALPHA (required)", output)
      self.assertIn("--beta=BETA\n        Default: '0'", output)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import sys
  import textwrap
  from fire import formatting
  from fire import helptext
  from fire import test_components
  from fire import testutils
  from fire import trace
  import six
label_desc: Use image node_id 21 for calling the HelpTest obj's underlying member method code with example usage: obj.testHelpTextFunctionMixedDefaults() without return types