public static StringBuilder whitespace(StringBuilder buf,int n){
  while (n >= WHITESPACE_BUFFER_LENGTH) {
    buf.append(WHITESPACE_BUFFER);
    n-=WHITESPACE_BUFFER_LENGTH;
  }
  return n > 0 ? buf.append(WHITESPACE_BUFFER,0,n) : buf;
}

public static StringBuilder whitespace ( StringBuilder buf , int n ) { while ( n >= WHITESPACE_BUFFER_LENGTH ) { buf . append ( WHITESPACE_BUFFER ) ; n -= WHITESPACE_BUFFER_LENGTH ; } return n > 0 ? buf . append ( WHITESPACE_BUFFER , 0 , n ) : buf ; }
returns a string with the specified number of whitespace .
