Unity How to detect sprite mssing? or null?

I want to detect image sprite is "Missing" or "None"

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When I Get this sprite , They all got "null" like this , So How do I know it is "Missing" or "None" ?

PS : I want to know it is missing or none , it is different situations for me.

 

You could use Object.ReferenceEquals(sprite, null) as a missing sprite will should return false due to still having an instanceId and it should return true if it is null. Of course, it will return true is there is something populating the field as well.