Exclude

@Retention(value = RetentionPolicy.RUNTIME)
@Target(value = [ElementType.METHOD, ElementType.FIELD])
public annotationExclude

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Marks a field as excluded from the database instance.

Kotlin Note

When applying this annotation to a property of a Kotlin class, the@get use-site target should always be used. There is no need to use the@set use-site target as this annotation isonly considered whenwriting instances into Firestore, and is ignored whenreading instances from Firestore.

Here is an example of a class that can both be written into and read from Firestore whosebar property will never be written into Firestore:

dataclassPojo(varfoo:String?=null,@get:Excludevarbar:String?=null){constructor():this(null,null)//UsedbyFirestoretocreatenewinstances}

If the class only needs to bewritten into Firestore (and not read from Firestore) then the class can be simplified as follows:

dataclassPojo(valfoo:String?=null,@get:Excludevalbar:String?=null)

That is,var can be tightened toval and the secondary no-argument constructor can be omitted.