// vectors.clay

overload (Default) Vector(s:'S) | Sequence?('S) {
    ...
} shadow Vector(s:'S) | SizedSequence?('S) {
    ...
} shadow Vector(rvalue s:Vector['T]) {
    ...
}

// randomaccesssequences.clay

shadow (Default) Vector(s:'S) | RandomAccessSequence?('S) {
    ...
}

// forwardsequences.clay

shadow (Default) Vector(s:'S) | ForwardSequence?('S) {
    ...
}