void collectItems() {
    if (!myBreakpointsPanelProviders.isEmpty()) {
      disposeItems();
      myBreakpointItems.clear();
      for (BreakpointPanelProvider panelProvider : myBreakpointsPanelProviders) {
        panelProvider.provideBreakpointItems(myProject, myBreakpointItems);
      }
    }
  }
void collectItems()