# File lib/table_print/fingerprinter.rb, line 54
    def create_child_group(prefix, hash, target)
      passable_columns(hash).collect do |name|
        recursing_prefix = "#{prefix}#{'.' unless prefix == ''}#{name}"
        group = RowGroup.new
        group.add_children hash_to_rows(recursing_prefix, hash[name], target.send(name))
        group
      end
    end