tree 9d58ba6e28d693b1b8e58792a645d88137050ec1
parent 660d17feaff82b34ac895b280ebe90a688465c0f
author Googler <noreply@google.com> 1585326659 -0700
committer Copybara-Service <copybara-worker@google.com> 1585326724 -0700

Replace "" (empty string) default values of multiple options with "null".

This is preparation for turning on parsing of default values for multiple (allowMultiple = true) options.
This change is NOOP (enforced by OptionDefaultValueConversionTest#shouldConvertDefaultValue()) because for now default value of a multiple option does not matter and is always converted to an empty list. But it will matter a bit later: "null" - special value resolving to the same empty list, anything else - parsed by the converter.

RELNOTES: None.
PiperOrigin-RevId: 303345588