local event = require("event")
local thread = require("thread")
thread.create(function()
  a,b,c,d,e,f,g = coroutine.yield()
  print(a,b,c,d,e,f,g)
  print(event.pull())
end)

event.push("custom_event_a")
print("done")
event.push("custom_event_b", 2)