如何使用重新定义的打印函数打印Lua表？

-- 定义重新定义的打印函数
function printTable(t)
    if type(t) ~= "table" then
        print("Invalid input, expected table")
        return
    end

    local function printTableHelper(t, indent)
        for k, v in pairs(t) do
            if type(v) == "table" then
                print(indent .. k .. " : ")
                printTableHelper(v, indent .. "    ")
            else
                print(indent .. k .. " : " .. tostring(v))
            end
        end
    end

    printTableHelper(t, "")
end

-- 测试打印函数
local myTable = {
    name = "John",
    age = 25,
    hobbies = {"reading", "gaming", "coding"},
    address = {
        street = "123 Main St",
        city = "New York",
        country = "USA"
    }
}

printTable(myTable)

name : John
age : 25
hobbies : 
    1 : reading
    2 : gaming
    3 : coding
address : 
    street : 123 Main St
    city : New York
    country : USA