valent to that of an argument permission if their first patterns are equivalent, and the patterns of the
 URLPatternList of the reference permission collectively match exactly the same set of patterns as are matched by the
 patterns of the URLPatternList of the argument permission.

 <p>
 Two Permission objects, P1 and P2, are equivalent if and only if P1.implies(P2) AND P2.implies(P1).</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java