Tweak management of multiple endpoints

For consistency with scripting integration tests.

Author: ctrueden

tests/test_introspect.py

@@ -8,8 +8,9 @@
 import scyjava
 from scyjava.config import Mode, mode
 
-scyjava.config.endpoints.append("net.imagej:imagej")
-scyjava.config.endpoints.append("net.imagej:imagej-legacy:MANAGED")
+scyjava.config.endpoints.extend(
+    ["net.imagej:imagej", "net.imagej:imagej-legacy:MANAGED"]
+)
 
 
 class TestIntrospection(object):