digraph "ABI diff" {
  "0" [shape=rectangle, label="'interface'"]
  "1" [label="'Foo getEnum(Foo)' → 'Foo getEnum(const Foo)'"]
  "2" [label="'Foo(Foo)' → 'Foo(const Foo)'"]
  "3" [shape=rectangle, label="'Foo' = 'enum Foo'"]
  "4" [color=red, shape=rectangle, label="'enum Foo'"]
  "4" -> "4:0"
  "4:0" [color=red, label="enumerator 'FOO_TWO' value changed from 100 to 2"]
  "3" -> "4" [label="resolved"]
  "2" -> "3" [label="return"]
  "5" [color=red, label="'Foo' = 'enum Foo' → 'const Foo'"]
  "5" -> "5:0"
  "5:0" [color=red, label="qualifier const added"]
  "5" -> "3" [label="underlying"]
  "2" -> "5" [label="parameter 1"]
  "1" -> "2" [label=""]
  "0" -> "1" [label=""]
}