class TablePrint::Fingerprinter

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