Improved quality of docblock comments

src/Interop/Channel/ChannelInterface.php

@@ -5,9 +5,25 @@ namespace NoccyLabs\Ipc\Interop\Channel;
 
 interface ChannelInterface
 {
+    /**
+     * Check if the channel is open
+     *
+     * @return boolean
+     */
     public function isOpen():bool;
 
+    /**
+     * Receive (and unserialize) a frame of data.
+     *
+     * @return mixed
+     */
     public function receive();
 
+    /**
+     * Send a frame of data
+     *
+     * @param mixed $data
+     * @return void
+     */
     public function send($data);
 }