Function sp_state_machine::key_changes_proof_check_with_db

pub fn key_changes_proof_check_with_db<'a, H: Hasher, Number: BlockNumber>(
    config: ConfigurationRange<'a, Number>, 
    roots_storage: &dyn RootsStorage<H, Number>, 
    proof_db: &InMemoryStorage<H, Number>, 
    begin: Number, 
    end: &AnchorBlockId<H::Out, Number>, 
    max: Number, 
    storage_key: Option<&PrefixedStorageKey>, 
    key: &[u8]
) -> Result<Vec<(Number, u32)>, String> where
    H::Out: Encode, 

Similar to the key_changes_proof_check function, but works with prepared proof storage.