protected void indent() throws IOException {
        if (prettyPrint) {
            for (int i = 0; i < indentDepth; i++) {
                writer.write(indentString);
            }
        }
    }
protected void indent ( ) throws IOException { if ( prettyPrint ) { for ( int i = 0 ; i < indentDepth ; i ++ ) { writer . write ( indentString ) ; } } }
Write a tab character to a character stream.

@throws IOException if an I/O error has occurred