+ /**
+ * Comparison operator
+ */
+ bool operator==(const l3_binding& l) const;
+
+ /**
+ * Get the object's key
+ */
+ const key_t key() const;
+
+ /**
+ * The iterator type
+ */
+ typedef singular_db<key_t, l3_binding>::const_iterator const_iterator_t;
+
+ static const_iterator_t cbegin();
+ static const_iterator_t cend();
+