* "visitor" pattern: Use local variable type inference
Update "visitor" pattern with local variable type inference.
* "value-object" pattern: Use local variable type inference
Update "value-object" pattern with local variable type inference.
* "unit-of-work" pattern: Use local variable type inference
Update "value-object" pattern with local variable type inference.
* "typeobjectpattern" pattern: Use local variable type inference
Update "value-object" pattern with local variable type inference.
