title: Worklight Direct Update - Does it replace all not native assets or just updated ones
body: <p>Does it replace all non-native assets or just updated ones.
  If only one configuration related json file requires change, then would all other files (non modified including images etc) also get downloaded to mobile client?
  If answer is "Yes", then is it possible to send update which is limited to download of only modified file (or may be 1 or 2 more in order to update checksum value or other supporting jobs - but not all files) in order to provide better user experience?</p>
  
  <p>Any detailed documentation of explaining how "Direct Update" works at low level.</p>
  
  <p>Environment: Worklight 6.2</p>