backend api for ZIP export

docs/backend_api/becca_entities_abstract_entity.js.html

@@ -74,7 +74,10 @@ class AbstractEntity {
         return this.utcDateModified || this.utcDateCreated;
     }
 
-    /** @protected */
+    /**
+     * @protected
+     * @returns {Becca}
+     */
     get becca() {
         if (!becca) {
             becca = require('../becca');
@@ -103,7 +106,7 @@ class AbstractEntity {
     /**
      * Saves entity - executes SQL, but doesn't commit the transaction on its own
      *
-     * @returns {AbstractEntity}
+     * @returns {this}
      */
     save() {
         const entityName = this.constructor.entityName;