diff --git a/release_scripts/localization_scripts/itemchange.py b/release_scripts/localization_scripts/itemchange.py
index 8533be9469..698e710375 100644
--- a/release_scripts/localization_scripts/itemchange.py
+++ b/release_scripts/localization_scripts/itemchange.py
@@ -3,6 +3,12 @@ from propsutil import get_entry_dict
 
 
 class ItemChange:
+    rel_path: str
+    key: str
+    prev_val: str
+    cur_val: str
+    type: str
+
     def __init__(self, rel_path: str, key: str, prev_val: str, cur_val: str):
         """Describes the change that occurred for a particular key of a properties file.
 
diff --git a/release_scripts/localization_scripts/propentry.py b/release_scripts/localization_scripts/propentry.py
index 4821f4bc5f..d6930c1c1e 100644
--- a/release_scripts/localization_scripts/propentry.py
+++ b/release_scripts/localization_scripts/propentry.py
@@ -1,4 +1,9 @@
 class PropEntry:
+    rel_path: str
+    key: str
+    value: str
+    should_delete: str
+
     def __init__(self, rel_path: str, key: str, value: str, should_delete: bool = False):
         """Defines a property file entry to be updated in a property file.
 
diff --git a/release_scripts/localization_scripts/regexutil.py b/release_scripts/localization_scripts/regexutil.py
new file mode 100644
index 0000000000..ce1952e3bb
--- /dev/null
+++ b/release_scripts/localization_scripts/regexutil.py
@@ -0,0 +1,16 @@
+from typing import TypeVar, Callable, Tuple
+
+
+def is_match(content: str, regex: str) -> bool:
+    pass
+
+T = TypeVar('T')
+
+def is_match_on_field(obj: T, prop_retriever: Callable[T, str]) -> bool:
+    pass
+
+class SeparationResult:
+
+    def __init__(self, ):
+
+def separate(obj: T, prop_retriever: Callable[T, str]) ->