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