How to use the pluggy.__version__ function in pluggy

def test_passes():
                pass
        """
        )
        result = testdir.runpytest()
        verinfo = ".".join(map(str, sys.version_info[:3]))
        result.stdout.fnmatch_lines(
            [
                "*===== test session starts ====*",
                "platform %s -- Python %s*pytest-%s*py-%s*pluggy-%s"
                % (
                    sys.platform,
                    verinfo,
                    pytest.__version__,
                    py.__version__,
                    pluggy.__version__,
                ),
                "*test_header_trailer_info.py .*",
                "=* 1 passed*in *.[0-9][0-9]s *=",
            ]
        )
        if request.config.pluginmanager.list_plugin_distinfo():
            result.stdout.fnmatch_lines(["plugins: *"])

def test_passes():
                pass
        """
        )
        result = testdir.runpytest()
        verinfo = ".".join(map(str, sys.version_info[:3]))
        result.stdout.fnmatch_lines(
            [
                "*===== test session starts ====*",
                "platform %s -- Python %s*pytest-%s*py-%s*pluggy-%s"
                % (
                    sys.platform,
                    verinfo,
                    pytest.__version__,
                    py.__version__,
                    pluggy.__version__,
                ),
                "*test_header_trailer_info.py .*",
                "=* 1 passed*in *.[0-9][0-9] seconds *=",
            ]
        )
        if pytest.config.pluginmanager.list_plugin_distinfo():
            result.stdout.fnmatch_lines(["plugins: *"])

def test_passes():
                pass
        """
        )
        result = testdir.runpytest()
        verinfo = ".".join(map(str, sys.version_info[:3]))
        result.stdout.fnmatch_lines(
            [
                "*===== test session starts ====*",
                "platform %s -- Python %s*pytest-%s*py-%s*pluggy-%s"
                % (
                    sys.platform,
                    verinfo,
                    pytest.__version__,
                    py.__version__,
                    pluggy.__version__,
                ),
                "*test_header_trailer_info.py .*",
                "=* 1 passed*in *.[0-9][0-9] seconds *=",
            ]
        )
        if request.config.pluginmanager.list_plugin_distinfo():
            result.stdout.fnmatch_lines(["plugins: *"])

def pytest_sessionstart(self, session):
        self._session = session
        self._sessionstarttime = time.time()
        if not self.showheader:
            return
        self.write_sep("=", "test session starts", bold=True)
        verinfo = platform.python_version()
        msg = "platform %s -- Python %s" % (sys.platform, verinfo)
        if hasattr(sys, "pypy_version_info"):
            verinfo = ".".join(map(str, sys.pypy_version_info[:3]))
            msg += "[pypy-%s-%s]" % (verinfo, sys.pypy_version_info[3])
        msg += ", pytest-%s, py-%s, pluggy-%s" % (
            pytest.__version__,
            py.__version__,
            pluggy.__version__,
        )
        if (
            self.verbosity > 0
            or self.config.option.debug
            or getattr(self.config.option, "pastebin", None)
        ):
            msg += " -- " + str(sys.executable)
        self.write_line(msg)
        lines = self.config.hook.pytest_report_header(
            config=self.config, startdir=self.startdir
        )
        self._write_report_lines_from_hooks(lines)

def pytest_sessionstart(self, session):
        self._starttime = time.time()
        self._n_tests = 0
        self._started = False

        if self.verbosity:
            verinfo = platform.python_version()
            msg = "platform {} -- Python {}".format(sys.platform, verinfo)
            if hasattr(sys, "pypy_version_info"):
                verinfo = ".".join(map(str, sys.pypy_version_info[:3]))
                msg += "[pypy-{}-{}]".format(verinfo, sys.pypy_version_info[3])
            self.print(msg)
            self.print("pytest=={}".format(pytest.__version__))
            self.print("py=={}".format(py.__version__))
            self.print("pluggy=={}".format(pluggy.__version__))

            headers = self.config.hook.pytest_report_header(
                config=self.config, startdir=py.path.local()
            )
            for header in headers:
                if isinstance(header, str):
                    self.print(header)
                else:
                    for line in header:
                        self.print(line)

def pytest_sessionstart(self, session: Session) -> None:
        self._session = session
        self._sessionstarttime = time.time()
        if not self.showheader:
            return
        self.write_sep("=", "test session starts", bold=True)
        verinfo = platform.python_version()
        msg = "platform {} -- Python {}".format(sys.platform, verinfo)
        pypy_version_info = getattr(sys, "pypy_version_info", None)
        if pypy_version_info:
            verinfo = ".".join(map(str, pypy_version_info[:3]))
            msg += "[pypy-{}-{}]".format(verinfo, pypy_version_info[3])
        msg += ", pytest-{}, py-{}, pluggy-{}".format(
            pytest.__version__, py.__version__, pluggy.__version__
        )
        if (
            self.verbosity > 0
            or self.config.option.debug
            or getattr(self.config.option, "pastebin", None)
        ):
            msg += " -- " + str(sys.executable)
        self.write_line(msg)
        lines = self.config.hook.pytest_report_header(
            config=self.config, startdir=self.startdir
        )
        self._write_report_lines_from_hooks(lines)

def pytest_sessionstart(self, session):
        self._session = session
        self._sessionstarttime = time.time()
        if not self.showheader:
            return
        self.write_sep("=", "test session starts", bold=True)
        verinfo = platform.python_version()
        msg = "platform %s -- Python %s" % (sys.platform, verinfo)
        if hasattr(sys, "pypy_version_info"):
            verinfo = ".".join(map(str, sys.pypy_version_info[:3]))
            msg += "[pypy-%s-%s]" % (verinfo, sys.pypy_version_info[3])
        msg += ", pytest-%s, py-%s, pluggy-%s" % (
            pytest.__version__,
            py.__version__,
            pluggy.__version__,
        )
        if (
            self.verbosity > 0
            or self.config.option.debug
            or getattr(self.config.option, "pastebin", None)
        ):
            msg += " -- " + str(sys.executable)
        self.write_line(msg)
        lines = self.config.hook.pytest_report_header(
            config=self.config, startdir=self.startdir
        )
        self._write_report_lines_from_hooks(lines)