local function __TS__StringSlice(self, start, ____end)
    if start == nil or start ~= start then
        start = 0
    end
    if ____end ~= ____end then
        ____end = 0
    end
    if start >= 0 then
        start = start + 1
    end
    if ____end ~= nil and ____end < 0 then
        ____end = ____end - 1
    end
    return string.sub(self, start, ____end)
end