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system/vendor/illuminate/contracts/Broadcasting/HasBroadcastChannel.php

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+<?php
+
+namespace Illuminate\Contracts\Broadcasting;
+
+interface HasBroadcastChannel
+{
+    /**
+     * Get the broadcast channel route definition that is associated with the given entity.
+     *
+     * @return string
+     */
+    public function broadcastChannelRoute();
+
+    /**
+     * Get the broadcast channel name that is associated with the given entity.
+     *
+     * @return string
+     */
+    public function broadcastChannel();
+}