wro4j-maven-plugin/src/main/java/ro/isdc/wro/maven/plugin/support/ResourceChangeHandler.java
public void forget(final Resource resource) {
    if (resource != null) {
      getBuildContextHolder().setValue(resource.getUri(), null);
      rememberedSet.remove(resource.getUri());
    }
  }
public void forget(final Resource resource) {
    if (resource != null) {
      getBuildContextHolder().setValue(resource.getUri(), null);
      rememberedSet.remove(resource.getUri());
    }
  }
After invoking this method on a resource, the next invocation of {@link #isResourceChanged(Resource)} will return
true.

@param resourceUri
uri of the resource to clear from persisted storage.