pub fn verify_justification<Header: HeaderT>(
    finalized_target: (Header::Hash, Header::Number),
    authorities_set_id: SetId,
    authorities_set: &VoterSet<AuthorityId>,
    justification: &GrandpaJustification<Header>
) -> Result<(), Error>where
    Header::Number: BlockNumberOps,
Expand description

Verify that justification, that is generated by given authority set, finalizes given header.