How to use

com.intellij.openapi.projectRoots.impl.ProjectJdkImpl

constructor

@NotNull
private static Sdk createMockSdk(@NotNull String version) {
 String homePath = new File("testData/mockSdk-" + version + "/").getAbsolutePath();
 GoSdkType sdkType = GoSdkType.getInstance();
 ProjectJdkImpl sdk = new ProjectJdkImpl("Go " + version, sdkType, homePath, version);
 sdkType.setupSdkPaths(sdk);
 sdk.setVersionString(version);
 return sdk;
}

@TestOnly
@NotNull
public static Sdk createMockSdk(@NotNull String sdkHome, @NotNull Release version) {
  getInstance().mySdkHomeToReleaseCache.put(getVersionCacheKey(sdkHome), version);  // we'll not try to detect sdk version in tests environment
  Sdk sdk = new ProjectJdkImpl(getDefaultSdkName(sdkHome, version), getInstance());
  SdkModificator sdkModificator = sdk.getSdkModificator();
  sdkModificator.setHomePath(sdkHome);
  sdkModificator.setVersionString(getVersionString(version));// must be set after home path, otherwise setting home path clears the version string
  sdkModificator.commitChanges();
  configureSdkPaths(sdk);
  return sdk;
}

@Nullable
private static Sdk createDefaultErlangSdk(@NotNull ProjectJdkTable projectJdkTable,
                     @NotNull SdkType erlangSdkType,
                     @NotNull String homePath) {
  String sdkName = erlangSdkType.suggestSdkName("Default " + erlangSdkType.getName(), homePath);
  ProjectJdkImpl projectJdkImpl = new ProjectJdkImpl(sdkName, erlangSdkType);
  projectJdkImpl.setHomePath(homePath);
  erlangSdkType.setupSdkPaths(projectJdkImpl);
  final Sdk erlangSdk;
  if (projectJdkImpl.getVersionString() != null) {
    ApplicationManager.getApplication().invokeAndWait(
        () -> ApplicationManager.getApplication().runWriteAction(() ->
            projectJdkTable.addJdk(projectJdkImpl)
        ),
        NON_MODAL
    );
    erlangSdk = projectJdkImpl;
  } else {
    erlangSdk = null;
  }
  return erlangSdk;
}

String sdkHome = sdkType.adjustSelectedSdkHome(sdk.getHomePath());
if (sdkType.isValidSdkHome(sdkHome)) {
 ProjectJdkImpl newSdk = new ProjectJdkImpl(sdk.getName(), sdkType, sdkHome, sdkType.getVersionString(sdkHome));
 sdkType.setupSdkPaths(newSdk);
 sdksToAdd.add(newSdk);

@Override
public void loadState(@NotNull Element element) {
 myInterpretersList.clear();
 for (Element child : element.getChildren(PERL)) {
  ProjectJdkImpl sdk = new ProjectJdkImpl(null, null);
  sdk.readExternal(child, this);
  myInterpretersList.add(sdk);
 }
}