public Task<Result<int>> CallFunctionAsync(
	string functionName,
	string arg
)

Public Function CallFunctionAsync ( 
	functionName As String,
	arg As String
) As Task(Of Result(Of Integer))

public:
Task<Result<int>^>^ CallFunctionAsync(
	String^ functionName, 
	String^ arg
)

member CallFunctionAsync : 
        functionName : string * 
        arg : string -> Task<Result<int>>