PrettyPrinter Indenter: Ability to insert eol before object and array entries

I’d like to be able to configure an indenter to insert a newline before object and array braces/brackets. Instead of:

{
  foo: {
    bar: true
  }
}

I want:

{
  foo:
  {
    bar: true
  }
}

[cowtowncoder]

No, this will not work and is not intended to work. Indenter is valid within context of an open JsonGenerator, and one will be constructed for each writeValueAsString. ObjectWriters are stateless, immutable, and there is no way (or intent) to share state of indenter.

To produce root value separators, a single JsonGenerator must be used, as that tracks output state, to know where and when to add root value separator.

[cowwoc]

I think the problem is that ObjectWriter.writeValueAsString() creates a nested writer per invocation, so rootValueSeparator is never triggered (it only sees us writing a single value each time). To clarify: I need a way to “clean up” the pretty printer at the beginning or end of each writeValueAsString() invocation. I don’t see a way to do that with the current API.