JsonReader cannot get null values using public functions

[mgroth0]

Each of JsonReader's public functions do not accept null values anymore. I used to use nextString(), but now even that doesn't work. consumeValue<String?>() would work, however consumeValue is private.

For example, I don't know how to parse this in the streaming API:

{
"key": null
}

[DavidGrinberg]

Having the same issue. Looks to be caused by how consumeValue is defined in JsonReader.