# File lib/vagrant-libvirt/action/is_running.rb, line 11
        def call(env)
          domain = env[:machine].provider.driver.connection.servers.get(env[:machine].id.to_s)
          raise Errors::NoDomainError if domain.nil?
          env[:result] = domain.state.to_s == 'running'

          @app.call(env)
        end