<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<diagram program="umlet" version="14.2">
  <zoom_level>10</zoom_level>
  <element>
    <id>UMLSequenceAllInOne</id>
    <coordinates>
      <x>210</x>
      <y>50</y>
      <w>720</w>
      <h>650</h>
    </coordinates>
    <panel_attributes>title=A complex combined fragments
obj=Lifeline A~a
obj=Lifeline B~b
obj=Lifeline C~c
obj=Lifeline D~d

a->>>b : execute() d=duration; on=b
combinedFragment=combined fragment~cf; id2->id3 + :Message
a:{x==0}; on=c
combinedFragment=alt~alt1 c d; d:[x>0];  combinedFragment=loop~loop1 a b; b:[1..10]
on=b
b->>>a; on=a; d->c
..=alt1; c:[else]
a.>b; off=a; --=loop1;  c->d
..=cf
b.>a +1; off=b
--; --
destroy=d;
tick=2
a->b -2
a.>>>b --</panel_attributes>
    <additional_attributes/>
  </element>
  <element>
    <id>UMLUseCase</id>
    <coordinates>
      <x>380</x>
      <y>330</y>
      <w>190</w>
      <h>90</h>
    </coordinates>
    <panel_attributes>*Error*</panel_attributes>
    <additional_attributes/>
  </element>
</diagram>