167     AppendCapability(sample_rate_str,  in ToString()
169     AppendCapability(sample_rate_str,  in ToString()
172     AppendCapability(sample_rate_str,  in ToString()
175     AppendCapability(sample_rate_str,  in ToString()
178     AppendCapability(sample_rate_str,  in ToString()
181     AppendCapability(sample_rate_str,  in ToString()
184     AppendCapability(sample_rate_str,  in ToString()
187     AppendCapability(sample_rate_str,  in ToString()
190     AppendCapability(sample_rate_str,  in ToString()
195     AppendCapability(bits_per_sample_str,  in ToString()
198     AppendCapability(bits_per_sample_str,  in ToString()
201     AppendCapability(bits_per_sample_str,  in ToString()
204     AppendCapability(bits_per_sample_str,  in ToString()
209     AppendCapability(channel_mode_str,  in ToString()
212     AppendCapability(channel_mode_str,  in ToString()
215     AppendCapability(channel_mode_str,  in ToString()
231   static std::string AppendCapability(std::string& result, bool append,  in AppendCapability()  function