pub trait Handler {
// Required methods
fn put(&mut self, key: &[u8], value: &[u8]) -> Result<(), Error>;
fn delete(&mut self, key: &[u8]) -> Result<(), Error>;
}pub trait Handler {
// Required methods
fn put(&mut self, key: &[u8], value: &[u8]) -> Result<(), Error>;
fn delete(&mut self, key: &[u8]) -> Result<(), Error>;
}