java generation fails to generate proper constructors

Description

I'm using the geojson swagger file
https://gist.github.com/bubbobne/fe5f2db65acf039be6a9fd92fc9c7233

to generate code for Point and Polygon. Overall it works fine, however it fails to generate the "type" which should be "point" for Point and "polygon" for Polygon.

Swagger-codegen version

swagger-codegen-maven-plugin 2.2.3

Swagger declaration file content or url

look at Polygon or Point in the geojson swagger above.

Command line used for generation

I use Maven

generate-geojson generate src/main/resources/geometry_geojson.yaml java java8 src/java/main

Steps to reproduce

Related issues/PRs

Suggest a fix/enhancement

The hack is basically I add a constructor to the class like so:

public Point() {
setType(TypeEnum.POINT);
}

or for Polygon:

public Polygon() {
setType(TypeEnum.POLYGON);
}

Start by reproducing the Java generation with the linked GeoJSON Swagger file, swagger-codegen-maven-plugin 2.2.3, and the shown Maven configuration. Inspect the generated Point and Polygon classes and the handling of their type fields and enum values. Done means generation produces constructors that initialize Point to point and Polygon to polygon without manual edits.