code: private void fixStringModel(Schema m) {
          if (m.getType() != null && m.getType().equals("string") && m.getExample() != null) {
              String example = m.getExample().toString();
              if (example.substring(0, 1).equals("\"") &&
                  example.substring(example.length() - 1).equals("\"")) {
                  m.setExample(example.substring(1, example.length() - 1));
              }
          }
      }
docs: This function fix models that are string (mostly enum). Before this fix, the example
  would look something like that in the doc: "\"example from def\""
  
  @param m Model implementation