Explicit parametrization examples

[jmarshall9120]

I'm a very accomplished developer who is new to OPCUA. I've been meating out the workflow here based on reading the OPC UA specs and the examples provided. I've gone through all the client examples, a number of issue reports and discussions here - however I seem to still be missing some critical info on structuring requests.

For example:

I want to us the translate_browsepaths_to_nodeids service. So, I structure my request this way:
(note I'm using a jupyter nb for testing code)

params = [{
        'startingNode': client.nodes.objects.nodeid,
        'relativePath': '<2:DeviceSet>'
    }],
r = await client.uaclient.translate_browsepaths_to_nodeids(params)
display(
    r,
    params,
)

The result of this is something like:

File m:\source\bandz-padline-webserver\venv\lib\site-packages\asyncua\ua\ua_binary.py:292, in <genexpr>(.0)
    [289](file:///m%3A/source/bandz-padline-webserver/venv/lib/site-packages/asyncua/ua/ua_binary.py?line=288) def serialize(obj):
    [290](file:///m%3A/source/bandz-padline-webserver/venv/lib/site-packages/asyncua/ua/ua_binary.py?line=289)     return b''.join(
    [291](file:///m%3A/source/bandz-padline-webserver/venv/lib/site-packages/asyncua/ua/ua_binary.py?line=290)         serialize_encoding(obj) if name == 'Encoding'
--> [292](file:///m%3A/source/bandz-padline-webserver/venv/lib/site-packages/asyncua/ua/ua_binary.py?line=291)         else serializer(obj.__dict__[name])
    [293](file:///m%3A/source/bandz-padline-webserver/venv/lib/site-packages/asyncua/ua/ua_binary.py?line=292)         for name, serializer in encoding_functions
    [294](file:///m%3A/source/bandz-padline-webserver/venv/lib/site-packages/asyncua/ua/ua_binary.py?line=293)     )

AttributeError: 'list' object has no attribute '__dict__'

So...
1. how, should parameters actually be structured?

I'm not sure if I'm allowed to post the spec here as OPC UA likes to constantly remind us of copy right, but the definition of parameters for this function are on Part 4 page 61 - 5.8.4.2

[schroeder-]

We provide the a wrapper around that call.

node = client.get_node(nodeid)
child_node = await node.get_child(["4:path", "4:next_path"])

If you really want to call it direct, you can look how get_child works internal.

[oroulet]

Yes look at code in node.py.
Also the argument to these ua methods is never python builtins but ua structs. Something ala BrowsePathToNodeIdParameters