    # File lib/fog/ninefold/models/compute/address.rb, line 70
            def save
              raise "Operation not supported" if self.identity
              requires :zoneid

              options = {
                :zoneid => zoneid,
                :networkid => networkid,
                :account => account,
                :domainid => domainid
              }.delete_if {|k,v| v.nil? || v == "" }
              data = service.associate_ip_address(options)
              merge_attributes(data)
              true
            end