get
fun getGroupCouponInfoByCouponId(playerId: String, couponId: String, sessionToken: String): Single<Coupon>
getCouponInfo, This Single will emmit a Coupon
Return
a Single that emits the Coupon info.
Parameters
player
the id of the player from the group.
coupon
the id of the coupon to get info from.
session
optional token of the user.