<@U0BLU7JTA>: Yes, you are right, the example I post works well with kotlin version 1.0.0-beta-4589...

# eap

[benny_wang]

@dmitry.petrov: Yes, you are right, the example I post works well with kotlin version 1.0.0-beta-4589
but when I change to eap 1.0.0-rc-1017, It compile failed, the error said that can not determine with one to resolve.