import { Filter } from './filter.model' ; public export interface RawFilter extends Filter { /** The value of the filter. */ id : string ; /** Model name to indicate the filter type. */ modelName : 'RawFilter' ; /** Force  Filter property to true.  selected : true ; } /**
 * Type guard to check if a filter is a  RawFilter .
 *
 *  param filter returns True if the filter is a  RawFilter , false otherwise.
 *
 *  public export function isRawFilter ( filter ) { return filter . modelName === 'RawFilter' ; }