How to merge plantuml schema nodes?

Question

UML

There was a question based on the article https://habr.com/post/416077/

I really want to replace the three "choise one" nodes with one.
The current code is this:

start
if (condition one) then (yes)
:choise one;
else (no)
if (condition two) then (no)
:choise one;
elseif (condition three) then (blank)
:choise one;
else (filled)
:choise two;
endif
endif
stop

Answer 1

!define choseOne :choise one;
!define choseTwo :choise two;

start
    if (condition one) then (yes)
        choseOne
    else (no)
        if (condition two) then (no)
            choseOne
        elseif (condition three) then (blank)
            choseOne
        else (filled)
            choseTwo
        endif
    endif
stop