title: Effect of duplicate Redis subscription to same channel name
body: <p>To subscribe to an instance of StackExchange.Redis.ISubscriber one needs to call the following API:</p>
  
  <pre><code>void Subscribe(RedisChannel channel, Action&lt;RedisChannel, RedisValue&gt; handler, CommandFlags flags = CommandFlags.None);
  </code></pre>
  
  <p>Question is, what happens if one calls this same line of code with the same channel name as a simple string, say "TestChannel"?</p>
  
  <p>Does ISubscriber check for string equality or it just does not care and therefore we will have two subscriptions?</p>