#[allow(deprecated)] // Can be changed when MSRV >= 1.53

// Before:
impl<const N: usize> From<[HeaderName; N]> for AllowHeaders {
    fn from(arr: [HeaderName; N]) -> Self {
        #[allow(deprecated)] // Can be changed when MSRV >= 1.53
        Self::list(array::IntoIter::new(arr))
    }
}

// After:
impl<I> From<I> for AllowHeaders
where
    I: IntoIterator<Item = HeaderName>,
{
    fn from(iter: I) -> Self {
        Self::list(iter)
    }
}

impl From<Method> for AllowMethods {
    fn from(method: Method) -> Self {
        Self::exact(method) // Single-item conversion
    }
}

// Removed deprecated array-based impl:
impl<const N: usize> From<[Method; N]> for AllowMethods {
    fn from(arr: [Method; N]) -> Self {
        #[allow(deprecated)] // Can be changed when MSRV >= 1.53
        Self::list(array::IntoIter::new(arr))
    }
}