pub const fn null() -> Self {
        Self {
            generation: 0,
            number: 0,
        }
    }
/// Null asid. Must be valid in both asid and non-asid systems.
Null asid. Must be valid in both asid and non-asid systems.
Null asid . Must be valid in both asid and non - asid systems .
pub const fn null() -> Self {
        Self {
            generation: 0,
            number: 0,
        }
    }
pub const fn null ( ) -> Self { Self { generation : 0 , number : 0 , } }
Null asid.
Null asid .