lang.reflect.Parameter (not available before Java 8).</div>
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<th class="colFirst" scope="row"><a href="CommandLine.Model.OptionSpec.html" title="class in picocli">CommandLine.Model.OptionSpec</a></th>
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<div class="block">The <code>OptionSpec</code> class models aspects of a <em>named option</em> of a <a href="CommandLine.Model.CommandSpec.html" title="class in picocli">command</a>, including whether
 it is required or optional, the option parameters suppo