custom_activity
@startuml;
%28*%29 --> if "Some Test" then;
  -->[true] "activity 1";
  if "" then;
    -> "activity 3" as a3;
  else;
    if "Other test" then;
      -left-> "activity 5";
    else;
      --> "activity 6";
    endif;
  endif;
else;
  ->[false] "activity 2";
endif;
a3 --> if "last test" then;
  --> "activity 7";
else;
  -> "activity 8";
endif;
@enduml
custom_activity
