compose_call function doesn't declare a return Type

[tjwilliams-bell-labs]

Following the example code in the "Quick Usage" section of the README.md to create a call using the "compose_call()" function then passing the result to the "call" parameter for "create_signed_extrinsic()" I get a warning from Pylance (Vs Code IDE) that the "call" parameter is expecting a type "GenericCall" and getting a type. of "ScaleType | Unknown". The "compose_call()" does not have a return type declared for the function, so it is using the "ScaleType | Unknown" which is what it appears to be getting internally from the "call.encode()" in the function.

The docstring for the function says the return for the "compose_call()" is a GenericCall (which I was expecting) but the actual function signature does not specify a return type.