private String getIndentString ( ) { assert enabled ; if ( indentString == null ) { for ( int i = indentStrings . size ( ) ; i <= indentLevel ; i ++ ) { indentStrings . add ( indentStrings . get ( i - 1 ) + INDENT_STR_ONE_LEVEL ) ; } indentString = indentStrings . get ( indentLevel ) ; } return indentString ; }
Return the current indentation string .