void (@NotNull ThreeSide side, int line) { SimpleThreesideDiffChange change = getChange(side, line); if (change != null) { TextDiffTypeImpl diffType = ObjectUtils.tryCast(change.getDiffType(), TextDiffTypeImpl.class); if (diffType != null) { myDispatcher.getMulticaster().selectionInPreviewChanged(diffType.getKey().getExternalName()); } return; } FoldRegion region = getFoldRegion(side, line); if (region != null) { myDispatcher.getMulticaster().selectionInPreviewChanged(DiffLineSeparatorRenderer.FOREGROUND.getExternalName()); } }