heif_image_handle_get_metadata_content_type  505 libheif/heif.h const char* heif_image_handle_get_metadata_content_type(const struct heif_image_handle* handle,
heif_image_handle_get_metadata_content_type  612 libheif/heif_cxx.h     return heif_image_handle_get_metadata_content_type(m_image_handle.get(), metadata_id);