Check Disk Image For Broken Seal

No Question, this is something not easy to find, wanted to post this for others:

hdiutil attach -nomount DiskImage.dmg

diskutil apfs list 

Disk Image Sealed (in Bold, the rest displayed are not sealed):

...

|   +-> Volume disk3s2 EFF9D253-C98F-4E53-BD15-FA2AA6612BD9

|   |   ---------------------------------------------------

|   |   APFS Volume Disk (Role):   disk3s2 (System)

|   |   Name:                      Macintosh HD (Case-insensitive)

|   |   Mount Point:               Not Mounted

|   |   Capacity Consumed:         9073623040 B (9.1 GB)

|   |   Sealed:                    Yes

|   |   FileVault:                 No

...

Disk Image Broken (in Bold):

...

    +-> Volume disk8s1 95CC4718-93CB-49A7-833B-5C5766C027CF

    |   ---------------------------------------------------

    |   APFS Volume Disk (Role):   disk8s1 (System)

    |   Name:                      Macintosh HD (Case-insensitive)

    |   Mount Point:               Not Mounted

    |   Capacity Consumed:         9074323456 B (9.1 GB)

    |   Sealed:                    Broken

    |   FileVault:                 No

...