AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.2.6" />

.NET API 393,728 bytes

 DOMImplementation

public sealed class DOMImplementation : IDOMImplementation
Provides a number of methods for performing operations that are independent of any particular instance of the DOM.
public Document CreateDocument(string namespaceURI, string qualifiedName, DocumentType doctype)

Creates a DOM Document object of the specified type with its document element.

public DocumentType CreateDocumentType(string qualifiedName, string publicId, string systemId)

Creates an empty DocumentType node. Entity declarations and notations are not made available. Entity reference expansions and default attribute additions do not occur.

public object GetFeature(string feature, string version)

This method returns a specialized object which implements the specialized APIs of the specified feature and version, as specified in DOM Features.

public bool HasFeature(string feature, string version)

Test if the DOM implementation implements a specific feature and version, as specified in DOM Features.