itle="class or interface in java.util" class="externalLink">Optional</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../errors/Error.html" title="class in io.streamthoughts.azkarra.api.errors">Error</a>&gt;&gt;&nbsp;validate()</pre>
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