implement before execute listeners for handling expandable objects as JSON queries

Author: kbarbounakis

OnBeforeExecuteExpand.d.ts

@@ -0,0 +1,13 @@
+import { BeforeExecuteEventListener, DataEventArgs} from './types';
+
+export declare class OnBeforeGetExpandableAssociation implements BeforeExecuteEventListener {
+    beforeExecute(event: DataEventArgs, callback: (err?: Error) => void): void;
+}
+
+export declare class OnBeforeGetExpandableTag implements BeforeExecuteEventListener {
+    beforeExecute(event: DataEventArgs, callback: (err?: Error) => void): void;
+}
+
+export declare class OnBeforeGetExpandableJunction implements BeforeExecuteEventListener {
+    beforeExecute(event: DataEventArgs, callback: (err?: Error) => void): void;
+}