def array_to_rxf_node(array , level , ref )
      node = RxFile::ArrayNode.new(ref)
      array.each do |object|
        node.add to_rxf_node( object , level + 1)
      end
      node
    end
def array_to_rxf_node(array , level , ref )
      node = RxFile::ArrayNode.new(ref)
      array.each do |object|
        node.add to_rxf_node( object , level + 1)
      end
      node
    end
Creates a ArrayNode (see there) for the Array.
 This mainly involves creating nodes for the children