org.linkedin.util-core/src/main/java/org/linkedin/util/xml/XML.java
static void addXMLDecl(StringBuilder xml, String versionInfo)
  {
    xml.append("<?xml version=\"").append(versionInfo).append("\"?>\n");
  }
static void addXMLDecl(StringBuilder xml, String versionInfo)
  {
    xml.append("<?xml version=\"").append(versionInfo).append("\"?>\n");
  }
Adds the XML declaration (<code>&lt;?xml version="1.0" ?&gt;</code>)

@param xml which buffer to append to
@param versionInfo the version info