How to use Gurobi Attributes in Julia

Hi,

I am trying to use one Gurobi attribute (UnbdRay, https://www.gurobi.com/documentation/8.1/refman/unbdray.html#attr:UnbdRay) but I am unable to find the macro to be used in Gurobi.

Below is an example I am trying to use
SP=Model(solver=GurobiSolver(InfUnbdInfo=1))
status= unbound

Now I am trying below macros to get unbound ray
getUnbdRay(SP)

below is the error
ERROR: UndefVarError: getUnbdRay not defined

Can anyone please help me how to call the attributes of Gurobi in Julia.

Thank you.
Vikas