Function client::rpc::extend_with_interceptor

pub fn extend_with_interceptor<T: IntoIterator<Item = (String, RemoteProcedure<Metadata>)>>(
    handler: &mut MetaIoHandler<Metadata>,
    rpc_conf: &RpcImplConfiguration,
    rpc_impl: T,
    throttling_conf: &Option<String>,
    throttling_section: &str
)