How to avoid Multiple calls to private common function

Question

I have class that has many public method which perfrom differnet service operations.

Inorder to do service operation it need to create service Instance.

 

How do I avoid calling private method from each function?

code snippet.

public class EmployeeModel

{

    private IOrganizationService _service = CRMConnect.CrmService();

     

   private void CreateCrmServiceInstance()

   {

      

         if (_service == null){

            _service = CRMConnect.CrmService();

      }

   }

   

public List<EmployeeModel> RetrieveAllContacts()

{

    CreateCrmServiceInstance();

    // do something using  _service

} 

 

public List<ContactModel> UpdateContactStatus()

{

CreateCrmServiceInstance();

// do something using _service

}