private static @NotNull Splitter createSplitter(boolean vertically,
                                                  @NotNull JComponent firstComponent, @NotNull JComponent secondComponent) {
    Splitter splitter = new OnePixelSplitter(vertically, 0.5f, 0.1f, 0.9f);
    splitter.setDividerWidth(JBUI.scale(1));
    EditorColorsScheme scheme = EditorColorsManager.getInstance().getGlobalScheme();
    Color color = scheme.getColor(CodeInsightColors.METHOD_SEPARATORS_COLOR);
    if (color != null) {
      splitter.getDivider().setBackground(color);
    }
    splitter.setFirstComponent(firstComponent);
    splitter.setSecondComponent(secondComponent);
    return splitter;
  }
private static @NotNull Splitter createSplitter(boolean vertically,
                                                  @NotNull JComponent firstComponent, @NotNull JComponent secondComponent)