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 Copy(_obj: Default);override;

public

    // attributes property
    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;


end;

function Default.Create();overload;
begin
    {self.}Create(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
    setsysparam(pn_calcctrlword(), getsysparam(pn_calcctrlword()) .| 0x200);
    class(OpenXmlElement).Create(_parent, _prefix, _local_name);
end;

function Default.Init();override;
begin
    pre := {self.}Prefix ? {self.}Prefix + ":" : "";
    attributes_ := array();
    attributes_pf_ := array(
        "Extension": makeweakref(thisFunction(WriteXmlAttrExtension)),
        "ContentType": makeweakref(thisFunction(WriteXmlAttrContentType)),
    );
    sorted_child_ := array(
    );
    container_ := new TSOfficeContainer(sorted_child_);
end;

function Default.Copy(_obj: Default);override;
begin
    tslassigning_backup := tslassigning;
    tslassigning := 1;
    class(OpenXmlElement).Copy(_obj);
    if not ifnil(_obj.Extension) then
        {self.}Extension := _obj.Extension;
    if not ifnil(_obj.ContentType) then
        {self.}ContentType := _obj.ContentType;
    tslassigning := tslassigning_backup;
end;

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

function Default.WriteXmlAttrExtension(_value);
begin
    if ifnil({self.}XmlAttrExtension) then
    begin
        {self.}XmlAttrExtension := new OpenXmlAttribute("", "Extension", nil);
        attributes_[length(attributes_)] := {self.}XmlAttrExtension;
    end
    {self.}XmlAttrExtension.Value := _value;
end;

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

function Default.WriteXmlAttrContentType(_value);
begin
    if ifnil({self.}XmlAttrContentType) then
    begin
        {self.}XmlAttrContentType := new OpenXmlAttribute("", "ContentType", nil);
        attributes_[length(attributes_)] := {self.}XmlAttrContentType;
    end
    {self.}XmlAttrContentType.Value := _value;
end;