The syntax for the message element is as follows: <!ELEMENT (java-method?|operation-name?)>.
Table 8–6 message element| 
 Element name  | 
 occurrences  | 
 Description  | 
 Type  | 
| 
 java-method  | 
 0 or 1  | 
 Java methods on which the security should be enforced  | |
| 
 operation-name  | 
 0 or 1  | 
 WSDL name of an operation of the web service  | 
 PCDATA  |