Updated The LKENodePool(...).nodes attribute to only be populated wit…

…h LKENodePoolNode objects

linode_api4/objects/lke.py

@@ -146,14 +146,22 @@ def _populate(self, json):
         Parse Nodes into more useful LKENodePoolNode objects
         """
         if json is not None and json != {}:
-            new_nodes = [
-                (
-                    LKENodePoolNode(self._client, c)
-                    if not isinstance(c, dict)
-                    else c
-                )
-                for c in json["nodes"]
-            ]
+            new_nodes = []
+            for c in json["nodes"]:
+                if isinstance(c, LKENodePoolNode):
+                    new_nodes.append(c)
+                elif isinstance(c, dict):
+                    node_id = c.get("id")
+                    if node_id is not None:
+                        new_nodes.append(LKENodePoolNode(self._client, c))
+                    else:
+                        raise ValueError(
+                            "Node dictionary does not contain 'id' key"
+                        )
+                elif isinstance(c, str):
+                    new_nodes.append(LKENodePoolNode(self._client, c))
+                else:
+                    raise TypeError("Unsupported node type: {}".format(type(c)))
             json["nodes"] = new_nodes
 
         super()._populate(json)