Function fc_mapping_sync::sync_blocks

pub fn sync_blocks<Block: BlockT, C, B>(
    client: &C, 
    substrate_backend: &B, 
    frontier_backend: &Backend<Block>, 
    limit: usize
) -> Result<bool, String> where
    C: ProvideRuntimeApi<Block> + Send + Sync + HeaderBackend<Block> + BlockOf,
    C::Api: EthereumRuntimeRPCApi<Block>,
    B: HeaderBackend<Block> + Backend<Block>,