<PackageReference Include="NETStandard.Library" Version="2.0.2" />

System.Xml.Linq.XContainer

public abstract class XContainer : XNode
namespace System.Xml.Linq { public abstract class XContainer : XNode { public XNode FirstNode { get; } public XNode LastNode { get; } public void Add(object content); public void Add(params object[] content); public void AddFirst(object content); public void AddFirst(params object[] content); public XmlWriter CreateWriter(); public IEnumerable<XNode> DescendantNodes(); public IEnumerable<XElement> Descendants(); public IEnumerable<XElement> Descendants(XName name); public XElement Element(XName name); public IEnumerable<XElement> Elements(); public IEnumerable<XElement> Elements(XName name); public IEnumerable<XNode> Nodes(); public void RemoveNodes(); public void ReplaceNodes(object content); public void ReplaceNodes(params object[] content); } }