code: public BoxMetadataCascadePolicy.Info addMetadataCascadePolicy(String scope, String templateKey) {
  
          return BoxMetadataCascadePolicy.create(this.getAPI(), this.getID(), scope, templateKey);
      }
docs: Creates a new Metadata Cascade Policy on a folder.
  
  @param scope         the scope of the metadata cascade policy.
  @param templateKey   the key of the template.
  @return  information about the Metadata Cascade Policy.