title: dp:serialize function in datapower
body: <p>Question might seem silly so please pardon but can some one kindly explain the usage of dp:serialize.</p>
  
  <p>I read somewhere that it converts node set into byte stream.</p>
  
  <p>what does the byte stream means is it referring  to  1 and 0 ??</p>
  
  <p>Also please let me know few of the scenarios where we need to use this dp extension function.</p>
  
  <p>Thanks</p>