@Test
  void symbol() throws IOException {
    JsonParser parser = Parsers.parserAt(new BsonSymbol("foo"));
    check(parser.currentToken()).is(JsonToken.VALUE_STRING);
    check(parser.getText()).is("foo");
    parser.nextToken();
  }
Validate different type conversions like {@code DateTime => Long => String}
criteria/mongo/test/org/immutables/criteria/mongo/bson4jackson/TypeConversionTest.java