pub fn update_by_previous_root(
        &self,
        previous_root: H256,
    ) -> Result<Option<SignedUpdate>, DbError> {
        self.retrieve_keyed_decodable(UPDATE, &previous_root)
    }
/// Retrieve an update by its previous root
Retrieve an update by its previous root
Retrieve an update by its previous root
pub fn update_by_previous_root(
        &self,
        previous_root: H256,
    ) -> Result<Option<SignedUpdate>, DbError> {
        self.retrieve_keyed_decodable(UPDATE, &previous_root)
    }
pub fn update_by_previous_root ( & self , previous_root : H256 , ) -> Result < Option < SignedUpdate > , DbError > { self . retrieve_keyed_decodable ( UPDATE , & previous_root ) }
Retrieve an update by its previous root
Retrieve an update by its previous root
&self
previous_root
H256
&self
previous_root
H256