CQL Expand Valueset Issue

[SeenaFa]

The issue/error that I'm getting is the following:
Expected ExpandValueSet(ValueSet), Found ExpandValueSet(java.util.ArrayList)

What I'm trying to do is check an Observation.code against the ValueSet via a function call. The function calls/uses fluent functions to do the check but the function arguments are taking a List<System.Code>

`library IssueExpandValueSet

using FHIR version '4.0.1'

include FHIRHelpers version '4.0.1' called FHIRHelpers
include IssueExpandValueSet_Concepts called Concepts

context Patient

define "Valueset": Concepts."Garb"

define "Garb Test Fails": "Has Garb Test Fails"([Observation])

define "Garb Test Works": "Has Garb Test Workaround"([Observation])

define function "Has Garb Test Fails" (obs List):
obs."With any code"(Concepts."Garb")

define function "Has Garb Test Workaround" (obs List):
obs."With any code"(Concepts."Garb" as System.ValueSet)

define fluent function "With any code"(observations List<FHIR.Observation>, codes List<System.Code>):
if observations is null or codes is null then null
else
(observations) observation
where observation.code."Has"(codes)

define fluent function "Has"(codeableConcept FHIR.CodeableConcept, codes List<System.Code>):
if codeableConcept is null or codes is null then null
else
exists(
(codeableConcept.coding) coding
where coding in codes
)`

I discovered a workaround, that isn't ideal, but is demonstrated in the define called "Has Garb Test Workaround"

I'm not sure what is happening and why the error is occurring.

I also attached a zip file containing the cql libraries, valueset, and test case to reproduce the error and also demonstrate the workaround.

IssueExpandValueSet.zip