CloudKit crash on column with name "etag"

[diatoming]

Hi,
while testing SyncEngine, i found a CloudKit crash on column name "etag".
The error is *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '"etag" is a reserved key name'

Crashed in file CloudKit+StructuredQueries

sqlite-data/Sources/SQLiteData/CloudKit/CloudKit+StructuredQueries.swift

Line 163 in c6a17b9

encryptedValues[key] = newValue

I've checked the reserved CloudKit keywords https://swiftpackageindex.com/pointfreeco/sqlite-data/1.1.1/documentation/sqlitedata/cloudkit#Avoid-reserved-CloudKit-keywords, 'etag' is not in the list.

Is it a CloudKit reserved keyword? or related to CloudKit metadata?

[stephencelis]

@diatoming It looks like we should add that to our docs. Apple unfortunately doesn't document an exhaustive list of these identifiers, so we've been doing that. Would you like to PR that addition?

[stephencelis]

I opened a PR here: #255

[diatoming]

Thanks.