code: FormattingContext enterCaseBody() {
      maybeIndent();
      curIndent = curIndent + "  ";
      endLine();
      curScope = new Scope(curScope, /* emitClosingBrace= */ false);
      return this;
    }
docs: For use only by {@link Switch#doFormatInitialStatements}. It's not an error for bodies of case
  clauses to be brace-delimited, but it is slightly less readable, so omit them.