public Map<Object, Object> getPropertyBag() {
        if (this.properties == null) {
            this.properties = new HashMap<Object, Object>();
        }
        return this.properties;
    }
public Map < Object , Object > getPropertyBag ( ) { if ( this . properties == null ) { this . properties = new HashMap < Object , Object > ( ) ; } return this . properties ; }
Fetch the property bag associated with this Chain.

@return Map<Object,Object>