fix: Update exception message for get representation content

src/main/java/com/box/sdk/BoxFile.java

@@ -508,7 +508,7 @@ public void getRepresentationContent(String representationHint, String assetPath
 
         List<Representation> reps = this.getInfoWithRepresentations(representationHint).getRepresentations();
         if (reps.size() < 1) {
-            throw new BoxAPIException("No matching representations found");
+            throw new BoxAPIException("No matching representations found for requested '" + representationHint + "' hint");
         }
         Representation representation = reps.get(0);
         String repState = representation.getStatus().getState();