synced_headers_grandpa_info: RuntimeDescriptor<
    [],
    {
        finality_proof: {
            commit: {
                precommits: {
                    id: FixedSizeBinary<32>;
                    precommit: { target_hash: FixedSizeBinary<32>; target_number: number };
                    signature: FixedSizeBinary<64>;
                }[];
                target_hash: FixedSizeBinary<32>;
                target_number: number;
            };
            round: bigint;
            votes_ancestries: {
                digest: DigestItem[];
                extrinsics_root: FixedSizeBinary<32>;
                number: number;
                parent_hash: FixedSizeBinary<32>;
                state_root: FixedSizeBinary<32>;
            }[];
        };
        new_verification_context?: {
            authorities: [FixedSizeBinary<32>, bigint][];
            set_id: bigint;
        };
    }[],
>

Returns the justifications accepted in the current block.