code: function extractDestData(data) {
  
  	if (destinationConfigExists(data)) {
  		if (data.dest instanceof Object) {
  			return extractMultiDestValues(data.dest);
  		}
  		else {
  			return extractBackportDestination(data.dest);
  		}
  	}
  
  	return [];
  }
docs: Returns all dest, cssDest, jsDest, scssDest ... Configs
  
  @param {Object} an Object  of possible configs wich should be filtered and extracted
  
  @return {Array} the config prefix (or file extension). For example css for cssDest, or js for dest.