diff --git a/keycloak/keycloak_admin.py b/keycloak/keycloak_admin.py
index 36c3cb8..40fa977 100644
--- a/keycloak/keycloak_admin.py
+++ b/keycloak/keycloak_admin.py
@@ -1016,6 +1016,13 @@ class KeycloakAdmin:
         return raise_error_from_response(data_raw, KeycloakGetError, expected_codes=[204])
 
     def get_realm_roles_of_user(self, user_id):
+        """
+        Get all realm roles for a user.
+
+        :param user_id: id of user
+        :return: Keycloak server response (array RoleRepresentation)
+        """
+
         params_path = {"realm-name": self.realm_name, "id": user_id}
         data_raw = self.raw_get(URL_ADMIN_USER_REALM_ROLES.format(**params_path))
         return raise_error_from_response(data_raw, KeycloakGetError)