class RubyXL::OOXMLContainerObject

def init_child_nodes(params)
  obtain_class_variable(:@@ooxml_child_nodes).each_value { |v|
    next if v[:is_array] # Only one collection node allowed per OOXMLContainerObject, and it is contained in itself.

    instance_variable_set("@#{v[:accessor]}", params[v[:accessor]])
  }
end