code: public static StaticBody fromString(
              final String rawXML)
              throws BOSHException {
          BodyParserResults results = PARSER.parse(rawXML);
          return new StaticBody(results.getAttributes(), rawXML);
      }
docs: Creates an instance which is initialized by reading a body
  message from the provided raw XML string.
  
  @param rawXML raw message XML in string form
  @return body instance
  @throws BOSHException on parse error