Add example for implicit conversion in controller methods

spring-boot/src/main/java/org/baeldung/converter/controller/StringToEmployeeConverterController.java

@@ -0,0 +1,16 @@
+package org.baeldung.converter.controller;
+
+import com.baeldung.toggle.Employee;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/string-to-employee")
+public class StringToEmployeeConverterController {
+
+    @GetMapping
+    public ResponseEntity<Object> getStringToEmployee(@RequestParam("employee") Employee employee) {
+        return ResponseEntity.ok(employee);
+    }
+}