proc `+`[I: SomeCppIterator](it: I; offset: int): I {.importcpp: "# + #",
    ...raises: [], tags: [], forbids: [].}

proc `-`[I: SomeCppIterator](it: I; offset: int): I {.importcpp: "# - #",
    ...raises: [], tags: [], forbids: [].}

proc `==`[ValueType](it, otherIt: CppConstIterator[ValueType]): bool {.
    importcpp: "# == #", ...raises: [], tags: [], forbids: [].}

proc `==`[ValueType](it, otherIt: CppIterator[ValueType]): bool {.
    importcpp: "# == #", ...raises: [], tags: [], forbids: [].}

proc `[]`[ValueType](it: CppConstIterator[ValueType]): ValueType {.
    importcpp: "*#", ...raises: [], tags: [], forbids: [].}

proc `[]`[ValueType](it: CppIterator[ValueType]): var ValueType {.
    importcpp: "*#", ...raises: [], tags: [], forbids: [].}

proc inc(it: SomeCppIterator) {.importcpp: "(void)(++#)", ...raises: [], tags: [],
                                forbids: [].}

proc inc(it: SomeCppIterator; offset: int) {.importcpp: "(void)(# += #)",
    ...raises: [], tags: [], forbids: [].}