code: def acquire(cls, name=None, lifetime=None, mechs=None, usage='both',
                  store=None):
          
  
          if store is None:
              res = rcreds.acquire_cred(name, lifetime,
                                        mechs, usage)
          else:
              if rcred_cred_store is None:
                  raise NotImplementedError("Your GSSAPI implementation does "
                                            "not have support for manipulating "
                                            "credential stores")
  
              store = _encode_dict(store)
  
              res = rcred_cred_store.acquire_cred_from(store, name,
                                                       lifetime, mechs,
                                                       usage)
  
          return tuples.AcquireCredResult(cls(base=res.creds), res.mechs,
                                          res.lifetime)
docs: Acquire GSSAPI credentials
  
          This method acquires credentials.  If the `store` argument is
          used, the credentials will be acquired from the given
          credential store (if supported).  Otherwise, the credentials are
          acquired from the default store.
  
          The credential store information is a dictionary containing
          mechanisms-specific keys and values pointing to a credential store
          or stores.
  
          Using a non-default store requires support for the credentials store
          extension.
  
          Args:
              name (Name): the name associated with the credentials,
                  or None for the default name
              lifetime (int): the desired lifetime of the credentials, or None
                  for indefinite
              mechs (list): the desired :class:`MechType` OIDs to be used
                  with the credentials, or None for the default set
              usage (str): the usage for the credentials -- either 'both',
                  'initiate', or 'accept'
              store (dict): the credential store information pointing to the
                  credential store from which to acquire the credentials,
                  or None for the default store (:requires-ext:`cred_store`)
  
          Returns:
              AcquireCredResult: the acquired credentials and information about
                  them
  
          Raises:
              BadMechanismError
              BadNameTypeError
              BadNameError
              ExpiredCredentialsError
              MissingCredentialsError