[JAVA] type:string format:byte is not mapped to byte[]

I have the following property described with the following json:

"hash": {
          "type": "string",
          "format": "byte"
        }

In swagger codegen v2.* this will be generated with type byte[] using resttemplate as library (jackson converts automatically using base64 format string)

In latest swagger codegen v3.09 this will be generated with type string. In this way the caller must do the conversion in base64 format string)

Compare the Java output produced by swagger codegen v2.* with the output from v3.09 when the schema uses type string and format byte with the resttemplate library. Check how Jackson handles the generated value and confirm that the generated type and base64 conversion behavior match the v2.* result.