54     auto metadata = ReadFromImageFile(metadata_file);  in OpenMetadata()  local
55     if (!metadata) {  in OpenMetadata()
59     return metadata;  in OpenMetadata()
87         auto metadata = OpenMetadata(metadata_dir);  in OpenOrCreateMetadata()  local
88         if (!metadata) {  in OpenOrCreateMetadata()
91         builder = MetadataBuilder::New(*metadata.get(), &opener);  in OpenOrCreateMetadata()
177     auto metadata = OpenMetadata(metadata_dir);  in RemoveImageMetadata()  local
178     if (!metadata) {  in RemoveImageMetadata()
183     auto builder = MetadataBuilder::New(*metadata.get(), &opener);  in RemoveImageMetadata()
217     auto metadata = OpenMetadata(metadata_dir);  in AddAttributes()  local
218     if (!metadata) {  in AddAttributes()
221     auto builder = MetadataBuilder::New(*metadata.get());  in AddAttributes()