Synopsis

<p:declare-step type="p:split-sequence">
     <p:input port="source" sequence="true"/>
     <p:output port="matched" sequence="true" primary="true"/>
     <p:output port="not-matched" sequence="true"/>
     <p:option name="initial-only" select="'false'"/>              <!-- boolean -->
     <p:option name="test" required="true"/>                       <!-- XPathExpression -->
</p:declare-step>