Access to Key of KeyValuePair not possible with Python Interpreter

[tinrobot2000]

Dynamo Version

2.18.1

Host

Revit
24.1.0.66
20230701_1515(x64)
2024.1.0

Operating System

Windows 10

What did you do?

Trying to get the Key for the BindingMap always throws an exception
OUT = doc.ParameterBindings.ForwardIterator().Key

What did you expect to see?

A ParameterGroup, or at least a string

What did you see instead?

What packages or external references (if any) were used?

None

Stack Trace

No response

Details

EDIT
You can retrieve some information
sp = SharedParameterElement
CPython3
doc.ParameterBindings.get_Item(sp.GetDefinition())
IronPython
doc.ParameterBindings.Item[sp.GetDefinition()]

EDIT 2
Workaround

# CPython3
params = FilteredElementCollector(doc).OfClass(ParameterElement).ToElements()

def get_binding(param):
    binding = doc.ParameterBindings.get_Item(param.GetDefinition())
    if binding:
        return param.GetDefinition().Name, binding

OUT = filter(None, [get_binding(p) for p in params])

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