code: void skipLine() {
          int ch;
          do {
              try {
                  ch = reader.read();
              } catch( IOException ex ) {
                  throw new LessException( ex );
              }
              incLineColumn( ch );
          } while( ch != '\n' && ch != -1 );
      }
docs: Skip all data until a newline occur or an EOF
  
  @throws LessException if an IO error occur