Sets the domain wildcard credentials for the connection. 
- Parameters
 - 
  
    | self | The DOFConnectionConfigBuilder to add the wildcard domain credentials to. If self is NULL, no action will be taken.  | 
    | credentials | The DOFCredentials to use as wildcard domain credentials. If NULL remove previously set credentials | 
  
   
- Returns
 - boolean TRUE The DOFCredentials were added to the config. 
 
- Exceptions
 - 
  
    | FALSE | If the DOFCredentials failed to be added.  |