private static void moveAtEndOfPreviousLine(ShSemanticEditorPosition position) {
    position.moveBeforeOptionalMix(ShTokenTypes.WHITESPACE);
    if (position.isAt(ShTypes.LINEFEED)) {
      position.moveBefore();
      position.moveBeforeOptionalMix(ShTokenTypes.WHITESPACE);
    }
  }
private static void moveAtEndOfPreviousLine(ShSemanticEditorPosition position)