具有重载的函数

当函数有重载时，源类型中的每个重载都必须与目标类型上的兼容签名相匹配。这确保了可以在与源函数相同的所有情况下调用目标函数。

When a function has overloads, each overload in the source type must be matched by a compatible signature on the target type. This ensures that the target function can be called in all the same situations as the source function.