Update packages/gapic-generator/gapic/templates/%namespace/%name_%version/%sub/_compat.py.j2

Co-authored-by: ohmayr <omairnaveed@ymail.com>

Author: hebaalazzeh

packages/gapic-generator/gapic/templates/%namespace/%name_%version/%sub/_compat.py.j2

@@ -2,7 +2,8 @@
 
 {% block content %}
 
-"""A compatibility module for older versions of google-api-core."""
+
+{% set has_auto_populated_fields = api.all_method_settings.values()|map(attribute="auto_populated_fields", default=[])|select|list %}
 {# TODO(https://github.com/googleapis/google-cloud-python/issues/17813):
 Clean up this file/functions when the minimum supported version of 
 google-api-core has the functions in `_compat.py.j2`. #}