fix: add additional reserved names for disambiguation

gapic/utils/reserved_names.py

@@ -25,5 +25,8 @@
         keyword.kwlist,
         # We make SOME exceptions for certain names that collide with builtins.
         set(dir(builtins)) - {"filter", "map", "id", "input", "property"},
+        # "mapping" and "ignore_unknown_fields" have special uses
+        # in the constructor of proto.Message
+        {"mapping", "ignore_unknown_fields"},
     )
 )

tests/unit/schema/wrappers/test_field.py

@@ -357,6 +357,9 @@ def test_field_name_kword_disambiguation():
     )
     assert frum_field.name == "frum"
 
+    mapping_field = make_field(name="mapping")
+    assert mapping_field.name == "mapping_"
+
 
 def test_field_resource_reference():
     field = make_field(name='parent', type='TYPE_STRING')