<scxml version="1.0" initial="1">
    <state id="1">
        <transition performative="request-when" from="initiator" to="B" target="2"/>
    </state>
    <state id="2">
        <transition performative="refuse" from="B" to="initiator" target="3"/>
        <transition performative="agree" from="B" to="initiator" target="4"/>
    </state>
    <state id="3" final="yes">
        
    </state>
    <state id="4">
        <transition performative="failure" from="B" to="initiator" target="3"/>
        <transition performative="inform" from="B" to="initiator" target="5" />
    </state>
    <state id="5" final="yes">
    </state>
</scxml>
