Add a debug assert for org entities being sorted.

src/types/greater_element.rs

@@ -219,3 +219,13 @@ impl<'s> TableRow<'s> {
         }
     }
 }
+
+pub trait GetAffiliatedKeywords<'s> {
+    fn get_affiliated_keywords(&self) -> () {
+        // foo
+    }
+}
+
+// impl<'s> GetAffiliatedKeywords for PlainList<'s> {
+
+// }