local function __TS__ArrayIndexOf(self, searchElement, fromIndex)
    if fromIndex == nil then
        fromIndex = 0
    end
    local len = #self
    if len == 0 then
        return -1
    end
    if fromIndex >= len then
        return -1
    end
    if fromIndex < 0 then
        fromIndex = len + fromIndex
        if fromIndex < 0 then
            fromIndex = 0
        end
    end
    for i = fromIndex + 1, len do
        if self[i] == searchElement then
            return i - 1
        end
    end
    return -1
end