@Override
  public void interceptCleanupSpecMethod(IMethodInvocation invocation) throws Throwable {
    try {
      invocation.proceed();
    } finally {
      shutdownRegistry();
    }
  }
Controls creation, startup and shutdown of the Tapestry container,
and injects specifications with Tapestry-provided objects.

@author Peter Niederwieser
spock-tapestry/src/main/java/org/spockframework/tapestry/TapestryInterceptor.java