rename downloadJSON() to resolveExternalReference() thanks @jerome

README.md

@@ -40,15 +40,15 @@ rJS(window)
   });
 ```
 
-In parent gadget downloadJSON() can be declared. downloadJSON() can be used to
-fetch schema from [jio storage](https://jio.nexedi.com/). Gadget runs downloadJSON()
+In parent gadget resolveExternalReference() can be declared. resolveExternalReference() can be used to
+fetch schema from [jio storage](https://jio.nexedi.com/). Gadget runs resolveExternalReference()
 for fetching schema if schema_url starts with `urn:jio:` but path absolutisation works 
 only for `urn:jio:reference?`. Example which demonstrates how a schema can be fetched
 from jio storage:
 
 ```javascript
 rJS(window)
-  .allowPublicAcquisition("downloadJSON", function (arr) {
+  .allowPublicAcquisition("resolveExternalReference", function (arr) {
     var g = this,
       url = arr[0],
       reference,
@@ -218,7 +218,7 @@ gadget consists of three parts:
  to generate schema selector. Contains various schema optimisations
  which reduce user choice according to schema logic.
 
- * Using of parent_gadget.downloadJSON() to resolve "urn:jio:" url schema
+ * Using of parent_gadget.resolveExternalReference() to resolve "urn:jio:" url schema
  links - it allows to use gadget inside officejs application and work
  with schemas saved in jio storage. Relative links are correctly resolved too.
 

jsonform.gadget.js

@@ -272,7 +272,7 @@
       if (download_url.startsWith("urn:jio:")) {
         queue = RSVP.Queue()
           .push(function () {
-            return g.downloadJSON(download_url);
+            return g.resolveExternalReference(download_url);
           });
       } else {
         queue = RSVP.Queue()
@@ -636,7 +636,7 @@
       g.props = {};
       g.options = {};
     })
-    .declareAcquiredMethod("downloadJSON", "downloadJSON")
+    .declareAcquiredMethod("resolveExternalReference", "resolveExternalReference")
     .declareAcquiredMethod("notifyChange", "notifyChange")
     .allowPublicAcquisition("rootNotifyChange", function () {
       this.props.changed = true;