protected String getCacheProperty(String key) {
        return cacheProps != null ? cacheProps.getProperty(key) : null;
    }
protected String getCacheProperty(String key) {
        return cacheProps != null ? cacheProps.getProperty(key) : null;
    }
protected String getCacheProperty ( String key ) { return cacheProps != null ? cacheProps . getProperty ( key ) : null ; }
Get cache's custom property.

@param key
@return
@since 0.6.1
Get cache s custom property .