Generated code is not validation boolean values

If we have this spec

 exp_list:       
        type: object
        properties:
          exclude:            
            type: boolean
          names:
            type: array
            items:
              type: string
        required:
          - exclude
          - names

maven-swagger-plugin will generated models with method

/**
   * calculate SKUs exclude SKU in names list
   * @return exclude
  **/
  @ApiModelProperty(required = true, value = "calculate SKUs exclude SKU in names list")
  @NotNull


  public Boolean isExclude() {
    return exclude;
  }

But need to generate method getExclude for spring validation work properly. Now really Boolean fields is not validated.

Reproduce the generated Java model from the YAML example using the maven-swagger-plugin, then trace the Java model template or generator path that emits isExclude(). Verify how Spring validation handles the generated Boolean field. Done means the generated accessor is getExclude() and Boolean validation works for the required field.