Macro pkix::define_content_with_associated_type

macro_rules! define_content_with_associated_type {
    ($name:ident => $Ty:ident {
        $($variant:ident),*,
    }) => { ... };
    ($name:ident => $Ty:ident {
        $($variant:ident = $typeVariant:ident),*,
    }) => { ... };
    ($name:ident => $Ty:ident {
        $($variant:ident($innerVariant:ty) = $typeVariant:ident),*,
    }) => { ... };
}