pub trait FixedBuffers {
type Guard;
// Required methods
fn fixed_guard(&mut self) -> Option<Self::Guard>;
fn register_fixed(&mut self, fd: Fd) -> Result<Option<u32>>;
fn unregister_fixed(&mut self, idx: u32);
}pub trait FixedBuffers {
type Guard;
// Required methods
fn fixed_guard(&mut self) -> Option<Self::Guard>;
fn register_fixed(&mut self, fd: Fd) -> Result<Option<u32>>;
fn unregister_fixed(&mut self, idx: u32);
}