@Override
      public void notifyInputLine(String line) {
        if (line.contains(expected)) {
          atomic.set(true);
        }
      }
Abstract base class for integration tests of both {@link LocatorLauncher} and
{@link ServerLauncher}.

@since GemFire 8.0
geode-core/src/integrationTest/java/org/apache/geode/distributed/LauncherIntegrationTestCase.java