| AddGenericMetadata(HeifImageHandle, String, Byte[]) | Adds generic meta-data to the image. |
| AddGenericMetadata(HeifImageHandle, String, ReadOnlySpan<Byte>) | Adds generic meta-data to the image. |
| AddGenericMetadata(HeifImageHandle, String, String, Byte[]) | Adds generic meta-data to the image. |
| AddGenericMetadata(HeifImageHandle, String, String, ReadOnlySpan<Byte>) | Adds generic meta-data to the image. |