Increment
data class Increment(val path: String, val by: <Error class: unknown class>? = null, val index: <Error class: unknown class>? = null, val key: String? = null, val equals: <Error class: unknown class>? = null, val field: String? = null) : MutationAction
Add to a number; by defaults to 1 and may be negative. An absent target is treated as 0.