comefrom: <awangdev>297. Serialize and Deserialize Binary Tree_1.java
code: private void truncateData(StringBuffer sb) {
  
          sb.delete(0, sb.indexOf(",") + 1);
      }
masked: private void var_0 ( StringBuffer var_1 ) {
    var_1 . delete ( 0 , var_1 . indexOf ( "," ) + 1 ) ;
  }
  