| 12345678910111213141516171819 | #pragma once#include <ostream>#include <string>#include <vector>#include "prometheus/metric_family.h"#include "prometheus/serializer.h"namespace prometheus {class TextSerializer : public Serializer { public:  using Serializer::Serialize;  void Serialize(std::ostream& out,                 const std::vector<MetricFamily>& metrics) const override;};}  // namespace prometheus
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