[BUG] Go Code Generator do not strip out {} in oneOf

Created by: mariotoffia

Description

The GoClientCodeGen.java do incorrectly render the typeToName. The problem seems to be in

private String typeToName(String content) {
        content = content.trim().replace("[]", "array_of_");
        content = content.trim().replace("[", "map_of_");
        content = content.trim().replace("]", "");
        return camelize(content);
    }

where the content is (in my case) map[string]interface{} and the curly braces are not stripped.

openapi-generator version

Version 6.0.1

OpenAPI declaration file content or url

DataPoint:
  oneOf:
    - type: object
    - type:
      $ref: '#/SimpleDataPoint'
SimpleDataPoint:
  properties:
    v:
      type: number
    t:
      type: integer
  required:
    - v
    - t

Will generate the following struct where the MapmapOfStringinterface{} occurs.

type DataPoint struct {
	SimpleDataPoint *SimpleDataPoint
	MapmapOfStringinterface{} *map[string]interface{}
}

(🎃As a sidenote, the anyOf (mustache template) will never even try to use #lambda.type-to-name and therefore instead it will render the map[string]interface{} *map[string]interface{}.)

Steps to reproduce

generate the above snippet

Suggest a fix

Just replace {} with empty string before camelize.