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<h4>buildPsshAtom</h4>
<pre class="methodSignature">public static&nbsp;byte[]&nbsp;buildPsshAtom&#8203;(<a href="https://developer.android.com/reference/java/util/UUID.html" title="class or interface in java.util" class="externalLink" target="_top">UUID</a>&nbsp;systemId,
                                   @Nullable
                                   <a href="https://developer.android.com/reference/java/util/UUID.html" title="class or interface in java.util" class