How to use

CoverageSuite

in

com.intellij.coverage

 return null;
Project project = baseCoverageSuite.getProject();
if (project == null) {
 return null;

@Nullable
@Override
protected Runnable createRenewRequest(@NotNull CoverageSuitesBundle bundle, @NotNull CoverageDataManager manager) {
 GoCoverageProjectData data = new GoCoverageProjectData();
 for (CoverageSuite suite : bundle.getSuites()) {
  ProjectData toMerge = suite.getCoverageData(manager);
  if (toMerge != null) {
   data.merge(toMerge);
  }
 }
 return () -> {
  annotateAllFiles(data, manager.doInReadActionIfProjectOpen(() -> ProjectRootManager.getInstance(getProject()).getContentRoots()));
  manager.triggerPresentationUpdate();
 };
}

@Override
public ProjectData loadCoverageData(@NotNull File sessionDataFile, @Nullable CoverageSuite baseCoverageSuite) {
 if (!(baseCoverageSuite instanceof PerlCoverageSuite)) {
  return null;
 }
 if (ApplicationManager.getApplication().isDispatchThread()) {
  final Ref<ProjectData> projectDataRef = new Ref<>();
  ProgressManager.getInstance().runProcessWithProgressSynchronously(
   () -> projectDataRef.set(doLoadCoverageData(sessionDataFile, (PerlCoverageSuite)baseCoverageSuite)),
   "Loading Coverage Data...", true, baseCoverageSuite.getProject());
  return projectDataRef.get();
 }
 else {
  return doLoadCoverageData(sessionDataFile, (PerlCoverageSuite)baseCoverageSuite);
 }
}