PROCESSING_INSTRUCTION_NODE,
  COMMENT_NODE,
  DOCUMENT_NODE,
  DOCUMENT_TYPE_NODE,
  DOCUMENT_FRAGMENT_NODE,
  NOTATION_NODE,
  DOCUMENT_POSITION_DISCONNECTED,
  DOCUMENT_POSITION_PRECEDING,
  DOCUMENT_POSITION_FOLLOWING,
  DOCUMENT_POSITION_CONTAINS,
  DOCUMENT_POSITION_CONTAINED_BY,
  DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC,
};
PK