An Endpoint in the sequence diagram

[yamada-wacul]

Proposal

I want to put Endpoints in sequence diagram in some cases.

An Endpoint is used in Interaction diagrams (Sequence, Timing, Communication or Interaction Overview) to reflect a lost or found Message in sequence.

https://sparxsystems.com/enterprise_architect_user_guide/16.1/modeling_languages/endpoint.html

Example

sequenceDiagram
    participant Alice
    Alice --x : foo
    --> Alice : bar

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If there's no recipient after the arrow or sender before the arrow, it will be a line to/from the endpoint.

Screenshots