private void indent() throws IOException {
        if (mIndent) {
            for (int i = 0; i < mStack.size() * mIndentSpaces; i++) {
                mOut.write(" ".getBytes());
            }
        }
    }
private void indent ( ) throws IOException { if ( mIndent ) { for ( int i = 0 ; i < mStack . size ( ) * mIndentSpaces ; i ++ ) { mOut . write ( " " . getBytes ( ) ) ; } } }
Indentation of output.

@throws IOException
if can't indent output