public void setIndentLevel(int indentLevel) {
        this.indentLevel = indentLevel;
    }
Set the initial indentation level.  This can be used to output
a document (or, more likely, an element) starting at a given
indent level, so it's not always flush against the left margin.
Default: 0

@param indentLevel the number of indents to start with
xmppserver/src/main/java/org/jivesoftware/util/XMLWriter.java