type Default = class(OpenXmlElement)
public
    function Create();overload;
    function Create(_node: XmlNode);overload;
    function Create(_parent: tslobj; _prefix: string; _local_name: string);overload;
    function Init();override;
    function InitAttributes();override;
    function InitChildren();override;
    function InitNode(_node: XmlNode);override;
    function Copy(_obj: Default);override;

    property Extension read ReadXmlAttrExtension write WriteXmlAttrExtension;
    property ContentType read ReadXmlAttrContentType write WriteXmlAttrContentType;
    function ReadXmlAttrExtension();
    function WriteXmlAttrExtension(_value);
    function ReadXmlAttrContentType();
    function WriteXmlAttrContentType(_value);

public
    //  Attributes
    XmlAttrExtension: OpenXmlAttribute;
    XmlAttrContentType: OpenXmlAttribute;

    // Children

end;

function Default.Create();overload;
begin
    {self.}Create(nil, nil, "Default");
end;

function Default.Create(_node: XmlNode);overload;
begin
    class(OpenXmlElement).Create(_node: XmlNode);
end;

function Default.Create(_parent: tslobj; _prefix: string; _local_name: string);overload;
begin
    class(OpenXmlElement).Create(_parent, _prefix, _local_name);
end;

function Default.Init();override;
begin
    {self.}XmlAttrExtension := new OpenXmlAttribute(nil, "Extension", nil);
    {self.}XmlAttrContentType := new OpenXmlAttribute(nil, "ContentType", nil);
end;

function Default.InitAttributes();override;
begin
    attributes_ := array(
        {self.}XmlAttrExtension,
        {self.}XmlAttrContentType,
    );
end;

function Default.InitChildren();override;
begin
    child_elements_ := array(
    );
    sorted_child_ := array(
        "": -1,
    );
end;

function Default.InitNode(_node: XmlNode);override;
begin
    if ifObj({self.}XmlNode) then
        for k,v in child_elements_ do v.InitNode(nil);
    {self.}XmlNode := ifObj(_node) ? _node : nil;
end;

function Default.Copy(_obj: Default);override;
begin
    if not ifnil(_obj.XmlAttrExtension.Value) then
        {self.}XmlAttrExtension.Value := _obj.XmlAttrExtension.Value;
    if not ifnil(_obj.XmlAttrContentType.Value) then
        {self.}XmlAttrContentType.Value := _obj.XmlAttrContentType.Value;
end;

function Default.ReadXmlAttrExtension();
begin
    return {self.}XmlAttrExtension.Value;
end;

function Default.WriteXmlAttrExtension(_value);
begin
    {self.}XmlAttrExtension.Value := _value;
end;

function Default.ReadXmlAttrContentType();
begin
    return {self.}XmlAttrContentType.Value;
end;

function Default.WriteXmlAttrContentType(_value);
begin
    {self.}XmlAttrContentType.Value := _value;
end;