[JAVA] [RESTTEMPLATE] import-mappings does not rename classes inside generated class

Description

I had to use one API which uses Geolatte in model classes. When I generate code I'll get many classes that does not exist in source project. For example GeometryobjectDTO is generated. That includes many classes that are unusable, for example PositionSequenceDTO.

Best option is to skip generation of those extra classes and use Geolatte classes instead. Import mappings option didn't do that trick for me.

Same json generated working for typescript.

Swagger-codegen version

2.2.3 and 2.3.1

Swagger declaration file content or url

https://gist.github.com/llaocto3/becf5041525b0d2cff51e4046468c25e

Command line used for generation

swagger-codegen-cli generate -i http://localhost:80/v2/api-docs -o /tmp/pettest -l java -D library=resttemplate --model-name-suffix=DTO --import-mappings GeometryobjectDTO=org.geolatte.geom.Geometry,PositionDTO=org.geolatte.geom.Position

Steps to reproduce

1. Download spring boot server example from swagger-codegen project
2. To model Pet add these lines:

  @JsonProperty("geometry")
  private Geometry<?> geometry;

  @JsonProperty("position")
  private Geometry<Position> position;

3. Add also import for Geolatte

import org.geolatte.geom.Geometry;
import org.geolatte.geom.Position;

4. Compile and run
5. Generate with command given in above section

Related issues/PRs

Didn't find any related issues.

Suggest a fix/enhancement

When given different names in mapping classes, rename also the class inside model.

Reproduce the issue with the supplied swagger-codegen-cli command, the linked Swagger declaration, and the Java RESTTemplate generator. Inspect the generated GeometryobjectDTO and PositionDTO model references; done means import mappings cause the generated model to use Geolatte Geometry and Position without generating unusable replacement classes.