# File lib/neo4jr/indexer.rb, line 18
      def find_node_by_identifier(identifier_value)
        hits    = @indexer.getNodes(RESERVED_IDENTIFIER_KEY, identifier_value)
        nodes   = hits.iterator
        results = []
        results << nodes.next while nodes.hasNext
        if results.size > 1
          results.sort!{|a, b| a.getId <=> b.getId}
          results.each_with_index{|node, index| @indexer.removeIndex(node, RESERVED_IDENTIFIER_KEY, identifier_value) if index < results.size}
        end
        results.last
      end