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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def worker_collectionfinish(self, node, ids):
 """worker has finished test collection. This adds the collection for this node to the scheduler. If the scheduler indicates collection is finished (i.e. all initial nodes have submitted their collections), then tells the scheduler to schedule the collected items. When initiating scheduling the first time it logs which scheduler is in use. """

        if self.shuttingdown:
            return
        self.config.hook.pytest_xdist_node_collection_finished(node=node, ids=ids)
        # tell session which items were effectively collected otherwise
        # the master node will finish the session with EXIT_NOTESTSCOLLECTED
        self._session.testscollected = len(ids)
        self.sched.add_node_collection(node, ids)
        if self.terminal:
            self.trdist.setstatus(node.gateway.spec, "[%d]" % (len(ids)))
        if self.sched.collection_is_completed:
            if self.terminal and not self.sched.has_pending:
                self.trdist.ensure_show_status()
                self.terminal.write_line("")
                if self.config.option.verbose > 0:
                    self.terminal.write_line(
                        "scheduling tests via %s" % (self.sched.__class__.__name__)
                    )
            self.sched.schedule()