161     class Patch final {
163         explicit Patch(const struct audio_patch &patch) : mAudioPatch(patch) {}  in Patch()  function
164         Patch() = default;
165         ~Patch();
166         Patch(const Patch& other) noexcept {  in Patch()  function
173         Patch(Patch&& other) noexcept { swap(other); }  in Patch()  function
174         Patch& operator=(Patch&& other) noexcept {
179         void swap(Patch &other) noexcept {  in swap()
188         friend void swap(Patch &a, Patch &b) noexcept {  in swap()
223     std::map<audio_patch_handle_t, Patch>& patches_l() { return mPatches; }  in patches_l()
234     std::map<audio_patch_handle_t, Patch> mPatches;