code: def add_caveats(self, cavs, key, loc):
          '''Add an array of caveats to the macaroon.
  
          This method does not mutate the current object.
          @param cavs arrary of caveats.
          @param key the PublicKey to encrypt third party caveat.
          @param loc locator to find the location object that has a method
          third_party_info.
          '''
          if cavs is None:
              return
          for cav in cavs:
              self.add_caveat(cav, key, locf add_caveats(self, cavs, key, loc):
          '''Add an array of caveats to the macaroon.
  
          This method does not mutate the current object.
          @param cavs arrary of caveats.
          @param key the PublicKey to encrypt third party caveat.
          @param loc locator to find the location object that has a method
          third_party_info.
          '''
          if cavs is None:
              return
          for cav in cavs:
              self.add_caveat(cav, key, loc)
docs: Add an array of caveats to the macaroon.
  
          This method does not mutate the current object.
          @param cavs arrary of caveats.
          @param key the PublicKey to encrypt third party caveat.
          @param loc locator to find the location object that has a method
          third_party_info.