Google Play Game Services API . questMilestones

claim(questId, milestoneId, requestId)

Report that a reward for the milestone corresponding to milestoneId for the quest corresponding to questId has been claimed by the currently authorized user.

Args:
  questId: string, The ID of the quest. (required)
  milestoneId: string, The ID of the milestone. (required)
  requestId: string, A numeric ID to ensure that the request is handled correctly across retries. Your client application must generate this ID randomly. (required)