Set the Credentials in the given DOFConnectionConfigBuilder. 
Please refer to DOFConnectionConfigBuilder_Create for the default value for this setting.
- Parameters
 - 
  
    | self | The Connection Config Builder. If self is NULL, no action will be taken.  | 
    | credentials | The authentication Credentials that will be used on the connection. If credentials is NULL, no credentials are used, and the security mode and permissions are ignored. | 
  
   
- Return values
 - 
  
    | TRUE | The Credentials was set.  | 
  
   
- Exceptions
 - 
  
    | FALSE | Failed to set Credentials.  |