code: func GetUnsupportedProperties(configDicts ...map[string]interface{}) []string {
  	unsupported := map[string]bool{}
  
  	for _, configDict := range configDicts {
  		for _, service := range getServices(configDict) {
  			serviceDict := service.(map[string]interface{})
  			for _, property := range types.UnsupportedProperties {
  				if _, isSet := serviceDict[property]; isSet {
  					unsupported[property] = true
  				}
  			}
  		}
  	}
  
  	return sortedKeys(unsupported)
  }
docs: // GetUnsupportedProperties returns the list of any unsupported properties that are
  // used in the Compose files.