code: private static BundleContext checkBundleContext() {
          if (bundleContext == null) {
              if (tc.isDebugEnabled()) {
                  Tr.debug(tc, "BundleContext is null and should not be");
              }
          }
          return bundleContext;
      }
docs: Check to make sure the bundleContext has been set.
  
  @return The BundleContext, or null if it could not be retrieved.