moved the doc generation to an recursive function

plugins/module_utils/module.py

@@ -9,15 +9,43 @@ try:
 except ImportError:
     from plugins.module_utils.generic import Types, _sdict
 
+
 __all__ = (
     "AnsibleModule",
     "SystemdUnitModule",
+    "installable",
+    "SystemdReloadMixin",
 )
 
 
 T = TypeVar("T")
 
 
+def docify(input: Union[dict, _sdict]) -> dict:
+    options = dict()
+    for name, help in input.items():
+        options[name] = dict(type=help["type"])
+        if hasattr(help, "_help") and help._help is not None:
+            options[name]["description"] = help._help
+        if "description" in help and isinstance(help["description"], str):
+            options[name]["description"] = options[name]["description"].split("\n")
+        if "required" in help and help["required"]:
+            options[name]["required"] = True
+        else:
+            options[name]["required"] = False
+        if help["type"] == "list":
+            options[name]["elements"] = help["elements"]
+            if not options[name]["required"]:
+                options[name]["default"] = []
+        if "default" in help:
+            options[name]["default"] = help["default"]
+        if "options" in help:
+            options[name]["options"] = docify(help["options"])
+        if "choices" in help:
+            options[name]["choices"] = tuple(help["choices"])
+    return options
+
+
 class AnsibleModule(object):
     """Simple wrapper for the basic.AnsibleModule"""
 
@@ -149,31 +177,13 @@ class AnsibleModule(object):
         doc = cls.__doc__
         if doc is None:
             doc = ""
-        options = dict()
         help: _sdict
         specs = dict()
         if "argument_spec" in cls._common_args:
             specs.update(cls._common_args["argument_spec"])
         if "argument_spec" in cls.module_spec:
             specs.update(cls.module_spec["argument_spec"])
-        for option, help in specs.items():
+        options = docify(specs)
-            options[option] = dict(
-                type=help["type"],
-            )
-            if hasattr(help, "_help") and help._help is not None:
-                options[option]["description"] = help._help.split("\n")
-            if "required" in help and help["required"]:
-                options[option]["required"] = True
-            else:
-                options[option]["required"] = False
-            if help["type"] == "list":
-                options[option]["elements"] = help["elements"]
-                if not options[option]["required"]:
-                    options[option]["default"] = []
-            if "default" in help:
-                options[option]["default"] = help["default"]
-            if "choices" in help:
-                options[option]["choices"] = tuple(help["choices"])
         docu = doc.split("\n")
         return str(
             yaml.safe_dump(