Macro tpm_bitflags 

macro_rules! tpm_bitflags {
    (@impl $(#[$outer:meta])* $vis:vis struct $name:ident($wrapper:ty, $repr:ty) {
        $(
            $(#[$inner:meta])*
            const $field:ident = $value:expr, $string_name:literal;
        )*
    }) => { ... };
    ($(#[$meta:meta])* $vis:vis struct $name:ident(TpmUint8) { $($rest:tt)* }) => { ... };
    ($(#[$meta:meta])* $vis:vis struct $name:ident(TpmUint16) { $($rest:tt)* }) => { ... };
    ($(#[$meta:meta])* $vis:vis struct $name:ident(TpmUint32) { $($rest:tt)* }) => { ... };
    ($(#[$meta:meta])* $vis:vis struct $name:ident(TpmUint64) { $($rest:tt)* }) => { ... };
}