Add brief docstring for the method `DecortController.account_resource_consumption`

module_utils/decort_utils.py

@@ -2168,6 +2168,16 @@ class DecortController(object):
     @waypoint
     def account_resource_consumption(self, account_id: int,
                                      fail_if_not_found=False) -> None | dict:
+        """
+        Implementation of functionality of the API method
+        `/cloudapi/account/getResourceConsumption`.
+
+
+        @param (bool) fail_if_not_found: If `True` is specified, then
+        the method `self.amodule.fail_json(**self.result)` will be
+        called if account is not found.
+        """
+
         api_resp = self.decort_api_call(
             arg_req_function=requests.post,
             arg_api_name='/restmachine/cloudapi/account/getResourceConsumption',