code: public void forceApply(String conflictResolution) {
  
          URL url = FORCE_METADATA_CASCADE_POLICIES_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID());
          BoxJSONRequest request = new BoxJSONRequest(this.getAPI(), url, "POST");
          JsonObject requestJSON = new JsonObject()
                  .add("conflict_resolution", conflictResolution);
          request.setBody(requestJSON.toString());
          request.send();
      }
docs: If a policy already exists on a folder, this will apply that policy to all existing files and sub folders within
  the target folder.
  
  @param conflictResolution the desired behavior for conflict-resolution. Set to either none or overwrite.