[JavaSpring] Import conflict with generated model and one of the libraries of same name

I have a schema named 'ResponseEntity'. The model class gets generated with the same name.
This conflicts with the ResponseEntiy class of Springframework and gives an error

error: a type with the same simple name is already defined by the single-type-import of ResponseEntity
import org.springframework.http.ResponseEntity;

API File:
default ResponseEntity myClass() {
// code
return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
}

Here, the func return-type ResponseEntity is from org.springframework.http.ResponseEntity
whereas the Generic type(one in the <>) ResponseEntity is my model class.

Discarded approaches:

1. I do not want to use importmappings to create an external model and map it to the ResponseEntity model. This will create issues on changing the swagger schema.
2. I cannot add Suffix/Prefix to all the generated models.

Is there a way such that?

1. I can add Suffix/Prefix to only that particular generated model.
2. Any workaround to never let the class 'org.springframework.http.ResponseEntity' be imported. I will add this in the ResponseEntity method of api.mustache class as a prefix.

Start with the Java Spring generator's api.mustache template and reproduce the conflict using a schema containing a ResponseEntity model. Trace how the generated return type and imports are assembled, then verify that generation produces compilable code without the name collision while retaining the schema model.