OptionalignoreOptionalignoreIf true the formulas will not be included in the JSON.
OptionalignoreIf true the resources will not include formatting.
OptionalresourcesHow resources — images and the other binaries the sheet references — are written.
'embed' serializes each one into the JSON, base64 encoded.'ignore' writes every id as 0 and no resources.uri,
or emitted as parts of another format and referenced by id alone.
If
truethe raw values will not be included in the JSON.