anchor.diff:    DOCUMENT_FRAGMENT,
   
     /// A document type declaration, e.g. `<!DOCTYPE...>`.
  -  DOCUMENT_TYPE
  +  DOCUMENT_TYPE,
   }
   
   /// Enum of the different XML Node types that [xml.reader.XmlPushReader] emits.
  
positive.code: 
  /// Enum of the different XML Node types.
  enum XmlNodeType {
    /// An element start or self-closed tag, e.g. `<item>` or `<item />`.
    ELEMENT,
  
    /// An attribute, e.g. `id="123"`.
    ATTRIBUTE,
  
    /// Text content within a node.
  
negative.code:   COMMENT,
  
    /// A document type declaration, e.g. `<!DOCTYPE...>`.
    DOCUMENT_TYPE,
  }
  