proc makeCurrent(self: Listener) {.
gcsafe, locks: 0, raises: [], tags: []
.}

proc clearCurrent(self: Listener) {.
gcsafe, locks: 0, raises: [], tags: []
.}

proc isCurrent(self: Listener): bool {.
gcsafe, locks: 0, raises: [], tags: []
.}

proc getListenerTransform(self: Listener): Transform {.
gcsafe, locks: 0, raises: [],
    tags: []
.}