Macro flatbuffers::struct_get_fn

macro_rules! struct_get_fn {
    (($name:ident, get_struct, $ty:ty, $slot:expr)) => { ... };
    (($name:ident, simple_enum, $n:ident, $ty:ty, $enum_mod:ident, $slot:expr, $default:expr)) => { ... };
    (($name:ident, $n:ident, $ty:ty, $slot:expr, $default:expr)) => { ... };
}