1. DomName('DOMImplementation.createDocumentType')
  2. DocsEditable()
_DocumentType createDocumentType(String qualifiedName, String publicId, String systemId)

Source 

@DomName('DOMImplementation.createDocumentType')
@DocsEditable()
_DocumentType createDocumentType(String qualifiedName, String publicId, String systemId) => _blink.BlinkDOMImplementation.instance.createDocumentType_Callback_3_(this, qualifiedName, publicId, systemId);