type CNvPr = 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: CNvPr);override;

    property Id read ReadXmlAttrId write WriteXmlAttrId;
    property Name read ReadXmlAttrName write WriteXmlAttrName;
    property Descr read ReadXmlAttrDescr write WriteXmlAttrDescr;
    function ReadXmlAttrId();
    function WriteXmlAttrId(_value);
    function ReadXmlAttrName();
    function WriteXmlAttrName(_value);
    function ReadXmlAttrDescr();
    function WriteXmlAttrDescr(_value);

public
    //  Attributes
    XmlAttrId: OpenXmlAttribute;
    XmlAttrName: OpenXmlAttribute;
    XmlAttrDescr: OpenXmlAttribute;

    // Children

end;

function CNvPr.Create();overload;
begin
    self.Create(nil, "pic", "cNvPr");
end;

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

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

function CNvPr.Init();override;
begin
    self.XmlAttrId := new OpenXmlAttribute(nil, "id", nil);
    self.XmlAttrName := new OpenXmlAttribute(nil, "name", nil);
    self.XmlAttrDescr := new OpenXmlAttribute(nil, "descr", nil);
end;

function CNvPr.InitAttributes();override;
begin
    attributes_ := array(
        self.XmlAttrId,
        self.XmlAttrName,
        self.XmlAttrDescr,
    );
end;

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

function CNvPr.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 CNvPr.Copy(_obj: CNvPr);override;
begin
    if not ifnil(_obj.XmlAttrId.Value) then
        self.XmlAttrId.Value := _obj.XmlAttrId.Value;
    if not ifnil(_obj.XmlAttrName.Value) then
        self.XmlAttrName.Value := _obj.XmlAttrName.Value;
    if not ifnil(_obj.XmlAttrDescr.Value) then
        self.XmlAttrDescr.Value := _obj.XmlAttrDescr.Value;
end;

function CNvPr.ReadXmlAttrId();
begin
    return self.XmlAttrId.Value;
end;

function CNvPr.WriteXmlAttrId(_value);
begin
    self.XmlAttrId.Value := _value;
end;

function CNvPr.ReadXmlAttrName();
begin
    return self.XmlAttrName.Value;
end;

function CNvPr.WriteXmlAttrName(_value);
begin
    self.XmlAttrName.Value := _value;
end;

function CNvPr.ReadXmlAttrDescr();
begin
    return self.XmlAttrDescr.Value;
end;

function CNvPr.WriteXmlAttrDescr(_value);
begin
    self.XmlAttrDescr.Value := _value;
end;