# File lib/fog/aws/requests/compute/delete_network_interface.rb, line 29
        def delete_network_interface(network_interface_id)
          response = Excon::Response.new
          if self.data[:network_interfaces][network_interface_id]

            if self.data[:network_interfaces][network_interface_id]['attachment']['attachmentId']
              raise Fog::Compute::AWS::Error.new("Interface is in use")
            end

            self.data[:network_interfaces].delete(network_interface_id)

            response.status = 200
            response.body = {
              'requestId' => Fog::AWS::Mock.request_id,
              'return'    => true
            }
            response
          else
            raise Fog::Compute::AWS::NotFound.new("The network interface '#{network_interface_id}' does not exist")
          end
        end