def discover(*nodes)
      nodes.flatten.compact.each do |peer|
        node = Node.new(peer, options)
        node.credentials.merge!(@credentials)
        peers.push(node) unless peers.include?(node)
      end
    end
def discover(*nodes)
      nodes.flatten.compact.each do |peer|
        node = Node.new(peer, options)
        node.credentials.merge!(@credentials)
        peers.push(node) unless peers.include?(node)
      end
    end
Discover the additional nodes.

 @api private

 @example Discover the additional nodes.
   node.discover([ "127.0.0.1:27019" ])

 @param [ Array<String> ] nodes The new nodes.

 @since 2.0.0