diff --git a/module_utils/decort_utils.py b/module_utils/decort_utils.py
index 381daf3..a1876e5 100644
--- a/module_utils/decort_utils.py
+++ b/module_utils/decort_utils.py
@@ -436,21 +436,37 @@ class DecortController(object):
 
         return True
 
-    def decort_api_call(self, arg_req_function, arg_api_name, arg_params,
-                        arg_files=None, not_fail_codes: None | list = None):
-        """Wrapper around DECORT API calls. It uses authorization mode and credentials validated at the class
-        instance creation to properly format API call and send it to the DECORT controller URL.
-        If connection errors are detected, it aborts execution of the script and relay error messages to upstream
-        Ansible process.
-        If HTTP 503 error is detected the method will retry with increasing timeout, and if after max_retries there
-        still is HTTP 503 error, it will abort as above.
-        If any other HTTP error is detected, the method will abort immediately as above.
-
-        @param arg_req_function: function object to be called as part of API, e.g. requests.post or requests.get
-        @param arg_api_name: a string containing the path to the API name under DECORT controller URL
-        @param arg_params: a dictionary containing parameters to be passed to the API call
-
-        @return: api call response object as returned by the REST functions from Python "requests" module
+    def decort_api_call(
+            self,
+            arg_api_name,
+            arg_params,
+            arg_req_function,
+            arg_files=None,
+            not_fail_codes: None | list = None,
+            ) -> requests.Response:
+        """
+        Wrapper around DECORT API calls. It uses authorization mode and
+        credentials validated at the class instance creation
+        to properly format API call and send it to
+        the DECORT controller URL.
+        If connection errors are detected, it aborts execution of
+        the script and relay error messages to upstream Ansible process.
+        If HTTP 503 error is detected the method will retry with
+        increasing timeout, and if after max_retries there still is
+        HTTP 503 error, it will abort as above. If any other HTTP error
+        is detected, the method will abort immediately as above.
+
+        @param arg_api_name: a string containing the path to
+        the API name under DECORT controller URL
+
+        @param arg_params: a dictionary containing parameters to be
+        passed to the API call
+
+        @param arg_req_function: function object to be called as
+        part of API, e.g. requests.post or requests.get
+
+        @return: api call response object as returned by
+        the REST functions from Python "requests" module
         """
 
         max_retries = 5