how to terminate execution of the current class?
<p>I am trying to embed data from external resources.</p>

<p>For each website that I have api access, I created a specific-Class to do the data fetching.</p>

<p>The rest of websites will use one general-Class.</p>

<p>So, at the very begining of the general-Class, if a URL pattern matches any of the URL that I already coded in the specific-Class, I want to exit the general-class immedietly. </p>

<p>How can I do it?</p>
