Python optional arguments (**kwargs) raise error message

[flennerhag]

Landscape treats optional Python arguments as errors, when they are in fact a design feature. Hence the following code

def foo(a, b=None, c=None):
    # do some stuff

def func(a, **kwargs):
    return foo(a, **kwargs)

would cause an error message with regards to the **kwargs, as in the below picture. Any way around the issue?