From 32100cfcd7cd767943778bda1f3cc81c18ae2f8b Mon Sep 17 00:00:00 2001
From: davelopez <46503462+davelopez@users.noreply.github.com>
Date: Tue, 16 Feb 2021 14:24:44 +0100
Subject: [PATCH] Add type hint for Registry.display_applications

---
 lib/galaxy/datatypes/registry.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/galaxy/datatypes/registry.py b/lib/galaxy/datatypes/registry.py
index 937f3a0253d..3c077d27fc0 100644
--- a/lib/galaxy/datatypes/registry.py
+++ b/lib/galaxy/datatypes/registry.py
@@ -6,6 +6,7 @@ import imp
 import logging
 import os
 from string import Template
+from typing import Dict
 
 import yaml
 
@@ -57,7 +58,7 @@ class Registry:
         # tool shed repositories that contain display applications.
         self.proprietary_display_app_containers = []
         # Map a display application id to a display application
-        self.display_applications = {}
+        self.display_applications: Dict[str, DisplayApplication] = {}
         # The following 2 attributes are used in the to_xml_file()
         # method to persist the current state into an xml file.
         self.display_path_attr = None