text: from .sandbox_check import SandboxCheck
  
  
  class SandboxLivenessCheck(SandboxCheck):
      def __init__(self, result, liveness_type):
          SandboxCheck.__init__(self, result)
          self.__liveness_type = liveness_type
  
      @property
      def liveness_type(self):
          return self.__liveness_type
  
      def to_json(self):
          parent = SandboxCheck.to_json(self)
          parent["liveness_type"] = self.liveness_type
          return parent
  