Environment details

• OS: Linux
• PHP version: 8.2
• Package name and version:

Steps to reproduce

1. Create an empty spreadsheet
2. Try to fetch data from it.
3. In result ValueRange:getValues() will return null what conflicts with the return type hint from the method.

Can we update the return type to null or array, please? :)

Code example

Related to: flow-php/flow#641