arcadia 7;
project layout_probe "Behavior layout Scene probe" id "10000000-0000-4000-8000-000000000001" {
    oa_entity sender "Sender" id "10000000-0000-4000-8000-000000000002" {}
    oa_entity receiver "Receiver" id "10000000-0000-4000-8000-000000000003" {}
    oa_activity inspect "Inspect" id "10000000-0000-4000-8000-000000000004" {}
    allocation inspect_assignment "Receiver performs inspection" id "10000000-0000-4000-8000-000000000005" {
        source @receiver; target @inspect;
    }
    communication_mean channel "Shared channel" id "10000000-0000-4000-8000-000000000006" {
        source @sender; target @receiver; oriented false;
    }
    oa_scenario conversation "Conversation" id "10000000-0000-4000-8000-000000000007" {
        viewpoint ParticipantInteraction;
        steps [@first, @second, @fragment, @self_call, @self_reply];
    }
    oa_lifeline left "Sender role" id "10000000-0000-4000-8000-000000000008" { parent @conversation; represented @sender; }
    oa_lifeline right "Receiver role" id "10000000-0000-4000-8000-000000000009" { parent @conversation; represented @receiver; }
    oa_occurrence first "First delivery" id "10000000-0000-4000-8000-00000000000a" {
        parent @conversation;
        body { Exchange {
            exchange @channel; sender @left; receiver @right;
            message_kind Asynchronous;
        }; };
    }
    oa_occurrence second "Second delivery" id "10000000-0000-4000-8000-00000000000b" {
        parent @conversation;
        body { Exchange {
            exchange @channel; sender @left; receiver @right;
            message_kind Asynchronous;
        }; };
    }
    oa_occurrence fragment "Optional inspection" id "10000000-0000-4000-8000-00000000000c" {
        parent @conversation;
        body { Fragment { operator Optional; branches [@operand]; }; };
    }
    oa_occurrence operand "When requested" id "10000000-0000-4000-8000-00000000000d" {
        parent @fragment;
        body { Branch { guard "requested"; occurrences [@nested]; }; };
    }
    oa_occurrence nested "Inspection occurrence" id "10000000-0000-4000-8000-00000000000e" {
        parent @operand;
        body { Action { action @inspect; lifeline @right; }; };
    }
    // Self calls intentionally have no global self-edge: such a relation is
    // invalid in the current metamodel. Their unassigned exchange is a known
    // incomplete-model warning, while explicit lifelines make Scene drawable.
    oa_occurrence self_call "Local call" id "10000000-0000-4000-8000-00000000000f" {
        parent @conversation;
        body { Exchange {
            exchange none; sender @right; receiver @right; message_kind Call;
        }; };
    }
    oa_occurrence self_reply "Local reply" id "10000000-0000-4000-8000-000000000010" {
        parent @conversation;
        body { Exchange {
            exchange none; sender @right; receiver @right;
            message_kind Reply; reply_to @self_call;
        }; };
    }
}