type Relationships = 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: Relationships);override;

public

    // attributes property
    property xmlns read ReadXmlAttrxmlns write WriteXmlAttrxmlns;
    function ReadXmlAttrxmlns();
    function WriteXmlAttrxmlns(_value);

    // multi property
    property Relationships read ReadRelationships;
    function ReadRelationships(_index);
    function AddRelationship(): Relationship;
    function AppendRelationship(): Relationship;

public
    // Attributes
    XmlAttrxmlns: OpenXmlAttribute;

    // Children

end;

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

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

function Relationships.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 Relationships.Init();override;
begin
    pre := {self.}Prefix ? {self.}Prefix + ":" : "";
    attributes_ := array();
    attributes_pf_ := array(
        "xmlns": makeweakref(thisFunction(WriteXmlAttrxmlns)),
    );
    sorted_child_ := array(
        "Relationship": array(0, makeweakref(thisFunction(AppendRelationship))),
    );
    container_ := new TSOfficeContainer(sorted_child_);
end;

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

function Relationships.ReadXmlAttrxmlns();
begin
    return {self.}XmlAttrxmlns.Value;
end;

function Relationships.WriteXmlAttrxmlns(_value);
begin
    if ifnil({self.}XmlAttrxmlns) then
    begin
        {self.}XmlAttrxmlns := new OpenXmlAttribute("", "xmlns", nil);
        attributes_[length(attributes_)] := {self.}XmlAttrxmlns;
    end
    {self.}XmlAttrxmlns.Value := _value;
end;

function Relationships.ReadRelationships(_index);
begin
    ind := ifnil(_index) ? -2 : _index;
    pre := {self.}Prefix ? {self.}Prefix + ":" : "";
    return container_.Get("Relationship", ind);
end;

function Relationships.AddRelationship(): Relationship;
begin
    obj := new Relationship(self, "", "Relationship");
    container_.Insert(obj);
    return obj;
end;

function Relationships.AppendRelationship(): Relationship;
begin
    obj := new Relationship(self, "", "Relationship");
    container_.Append(obj);
    return obj;
end;