code: func getBodyPropertiesDescription(body *raml.Bodies) (map[string]interface{}, string) {
  	tipStr := body.ApplicationJSON.TypeString()
  	if tipStr == "" || strings.ToLower(tipStr) == "object" {
  		return body.ApplicationJSON.Properties, ""
  	}
  
  	var js raml.JSONSchema
  
  	if err := json.Unmarshal([]byte(body.ApplicationJSON.TypeString()), &js); err != nil {
  		return nil, ""
  	}
  	return js.RAMLProperties(), js.Description
  
  }
docs: // get properties of a body
  // TODO : move it to 'raml' package