docs: def detect_version_str(self):
          """
          Try to detect version of package from command help text. Bit of a long
          shot as they are typically included
          """
          help_text = run_matlab_cmd("help('{}')".format(self.test_func))
          if not help_text:
              raise ArcanaRequirementNotFoundError(
                  "Did not find test function '{}' for {}"
                  .format(self.test_func, self))
          return self.parse_help_text(help_text)