user { # User
  n1: circle label:"Start Snapshot Pattern"
  n2: diamond label:"Receive Snapshot Pattern event"
  n3: rectangle label:"Validate Snapshot Pattern conditions"
  n5: rectangle label:"Record Snapshot Pattern outcome"
  n7: circle label:"End Snapshot Pattern"
  n1.handle(right) -> n2.handle(left)
  n2.handle(right) -> n3.handle(left) [label="Yes/Approved"]
  n2.handle(bottom) -> app.n4.handle(top) [label="No/Rejected"]
  n3.handle(right) -> n5.handle(left)
  n5.handle(bottom) -> app.n6.handle(top)
}

app { # App
  n4: rectangle label:"Execute Snapshot Pattern action"
  n6: rectangle label:"Monitor Snapshot Pattern status"
  n6.handle(right) -> user.n7.handle(bottom)
  n4.handle(right) -> user.n5.handle(top)
}