text: #!/usr/bin/env python3
  # MIT License
  #
  # Copyright (c) 2020 FABRIC Testbed
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in all
  # copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  #
  #
  # Author: Komal Thareja (kthare10@renci.org)
  from abc import abstractmethod, ABC
  
  from fim.slivers.base_sliver import BaseSliver
  
  from fabric_cf.actor.core.util.id import ID
  from fabric_cf.actor.core.util.resource_type import ResourceType
  
  
  class ConfigToken(ABC):
      @abstractmethod
      def get_reservation_id(self) -> ID:
          """
          Return reservation id
          @return reservation
          """
  
      @abstractmethod
      def get_resource_type(self) -> ResourceType:
          """
          return resource type
          @return resource type
          """
  
      @abstractmethod
      def complete_modify(self):
          """
          Complete the modify operation
          """
  
      @abstractmethod
      def get_sequence(self) -> int:
          """
          Get Sequence number
          @return sequence number
          """
  
      @abstractmethod
      def get_id(self) -> ID:
          """
          Get unit id
          @return unit id
          """
  
      @abstractmethod
      def close(self):
          """
          Mark the unit as closed
          """
  
      @abstractmethod
      def activate(self):
          """
          Mark the unit as active
          """
  
      @abstractmethod
      def get_sliver(self) -> BaseSliver:
          """
          Get Sliver
          """
  
      @abstractmethod
      def set_sliver(self, *, sliver: BaseSliver):
          """
          Set sliver
          """
  
      @abstractmethod
      def update_sliver(self, *, sliver:BaseSliver):
          """
          Update Sliver
          """