How to use the libmozevent.phabricator.PhabricatorBuildState.Public function in libmozevent

async def process_build(self, build):
        """
        Code review workflow to load all necessary information from Phabricator builds
        received from the webserver
        """
        assert build is not None, "Invalid payload"
        assert isinstance(build, PhabricatorBuild)

        # Update its state
        self.update_state(build)

        if build.state == PhabricatorBuildState.Public:

            # Check if the author is not blacklisted
            if self.is_blacklisted(build.revision):
                return

            # When the build is public, load needed details
            try:
                self.load_patches_stack(build)
                logger.info("Loaded stack of patches", build=str(build))
            except Exception as e:
                logger.warning(
                    "Failed to load build details", build=str(build), error=str(e)
                )
                return

            # Then send the build toward next stage

async def start_risk_analysis(self, build: PhabricatorBuild):
        """
        Run risk analysis by triggering a Taskcluster hook
        """
        assert build.state == PhabricatorBuildState.Public
        try:
            if not self.should_run_risk_analysis(build):
                return

            task = self.community_tc["hooks"].triggerHook(
                "project-relman",
                "bugbug-classify-patch",
                {
                    "PHABRICATOR_DEPLOYMENT": self.phabricator_deployment,
                    "DIFF_ID": build.diff_id,
                },
            )
            task_id = task["status"]["taskId"]
            logger.info("Triggered a new risk analysis task", id=task_id)

            # Send task to monitoring