#+include plantuml source in org file?

Question

I have a large plantuml sequence diagram in blah.iuml. I would like to include it in my org-mode file so that it gets regenerated and included each time I export the org file to html. I don't want to maintain the file separately, and not just insert it into the org file. I'd hoped that something like this would work

#+begin_src plantuml :file blah.png
#+include "./blah.iuml"
#+end_src

I can see that it is trying to run plantuml on a file that contains

@startuml
#-include "./blah.iuml"

That is, the include is not doing an actual include when inside a #+begin_src.

Is there a way I can tell org-mode: "run plantuml on this file and pop the result into the generated html"?

Answer 1

This worked for me

#+begin_src plantuml :file ./0003_files/layout_architecture.svg
@startuml
!include 0003_files/layout_architecture.puml
@enduml
#+end_src

the layout_architecture.puml also contains @startuml and @enduml.