@Override
  public void interceptInitializerMethod(IMethodInvocation invocation) throws Throwable {
    injectServices(invocation.getInstance(), false);
    invocation.proceed();
  }
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