# File test/test_monitor.rb, line 141
    def build_sample
      Rucy::FilterErrorSample.new(self,
                                  'Filter',
                                  [ [ 'foo', 'alice' ], [ 'bar', 'bob' ] ],
                                  '/attach_path',
                                  /attach_mask/,
                                  'virtual_host',
                                  @timestamp)
    end