type IdMap = 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: IdMap);override;

    property Ext read ReadXmlAttrExt write WriteXmlAttrExt;
    property Data read ReadXmlAttrData write WriteXmlAttrData;
    function ReadXmlAttrExt();
    function WriteXmlAttrExt(_value);
    function ReadXmlAttrData();
    function WriteXmlAttrData(_value);

public
    //  Attributes
    XmlAttrExt: OpenXmlAttribute;
    XmlAttrData: OpenXmlAttribute;

    // Children

end;

function IdMap.Create();overload;
begin
    self.Create(nil, "o", "idmap");
end;

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

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

function IdMap.Init();override;
begin
    self.XmlAttrExt := new OpenXmlAttribute("v", "ext", nil);
    self.XmlAttrData := new OpenXmlAttribute(nil, "data", nil);
end;

function IdMap.InitAttributes();override;
begin
    attributes_ := array(
        self.XmlAttrExt,
        self.XmlAttrData,
    );
end;

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

function IdMap.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 IdMap.Copy(_obj: IdMap);override;
begin
    if not ifnil(_obj.XmlAttrExt.Value) then
        self.XmlAttrExt.Value := _obj.XmlAttrExt.Value;
    if not ifnil(_obj.XmlAttrData.Value) then
        self.XmlAttrData.Value := _obj.XmlAttrData.Value;
end;

function IdMap.ReadXmlAttrExt();
begin
    return self.XmlAttrExt.Value;
end;

function IdMap.WriteXmlAttrExt(_value);
begin
    self.XmlAttrExt.Value := _value;
end;

function IdMap.ReadXmlAttrData();
begin
    return self.XmlAttrData.Value;
end;

function IdMap.WriteXmlAttrData(_value);
begin
    self.XmlAttrData.Value := _value;
end;