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