code: def release_address(self, public_ip=None, allocation_id=None):
          
          params = {}
  
          if public_ip is not None:
              params['PublicIp'] = public_ip
          elif allocation_id is not None:
              params['AllocationId'] = allocation_id
  
          return self.get_status('ReleaseAddress', params, verb='POST')
docs: Free up an Elastic IP address.
  
          :type public_ip: string
          :param public_ip: The public IP address for EC2 elastic IPs.
  
          :type allocation_id: string
          :param allocation_id: The ID for VPC elastic IPs.
  
          :rtype: bool
          :return: True if successful