type Xfrm = 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: Xfrm);override;

public

    // normal property
    property Off read ReadXmlChildOff;
    property Ext read ReadXmlChildExt;
    function ReadXmlChildOff();
    function ReadXmlChildExt();

public
    // Children
    XmlChildOff: XY;
    XmlChildExt: CXY;

end;

function Xfrm.Create();overload;
begin
    {self.}Create(nil, "a", "xfrm");
end;

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

function Xfrm.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 Xfrm.Init();override;
begin
    pre := {self.}Prefix ? {self.}Prefix + ":" : "";
    attributes_ := array();
    attributes_pf_ := array(
    );
    sorted_child_ := array(
        pre + "off": array(0, makeweakref(thisFunction(ReadXmlChildOff))),
        pre + "ext": array(1, makeweakref(thisFunction(ReadXmlChildExt))),
    );
    container_ := new TSOfficeContainer(sorted_child_);
end;

function Xfrm.Copy(_obj: Xfrm);override;
begin
    tslassigning_backup := tslassigning;
    tslassigning := 1;
    class(OpenXmlElement).Copy(_obj);
    if not ifnil(_obj.XmlChildOff) then
        {self.}Off.Copy(_obj.XmlChildOff);
    if not ifnil(_obj.XmlChildExt) then
        {self.}Ext.Copy(_obj.XmlChildExt);
    tslassigning := tslassigning_backup;
end;

function Xfrm.ReadXmlChildOff();
begin
    if tslassigning and ifnil({self.}XmlChildOff) then
    begin
        {self.}XmlChildOff := new XY(self, {self.}Prefix, "off");
        container_.Set({self.}XmlChildOff);
    end
    return {self.}XmlChildOff;
end;

function Xfrm.ReadXmlChildExt();
begin
    if tslassigning and ifnil({self.}XmlChildExt) then
    begin
        {self.}XmlChildExt := new CXY(self, {self.}Prefix, "ext");
        container_.Set({self.}XmlChildExt);
    end
    return {self.}XmlChildExt;
end;