Gets the identifier that DOFs created from this DOFConfig will use for operations in the unsecured domain. 
- Parameters
 - 
  
    | self | The DOFConfig to get the value from. This must not be NULL. | 
  
   
- Returns
 - The DOFObjectIDSource stored in the DOFConfig. 
 
- See Also
 - DOFState_GetSourceID 
 
- 
DOFConfigBuilder_SetSourceID