Not expecting void Start

Hi, I'm trying to make a very basic melee attack, but when I tried adding a cooldown to the attack, I got the error "...(10.12):error CS1519: Unexpected symbol 'void' in class, struct, or interface member declaration" My problem is that the error is refereeing to the "void Start" in the initialization, w$$anonymous$$ch has to be there, what did I do wrong? Here's the code, thanks a bunch.

using UnityEngine; using System.Collections;

public class PlayerAttack : MonoBehaviour { public GameObject target; public float attackTimer; public float coolDown

 // Use t$$anonymous$$s for initialization
 void Start () {
     attackTimer = 0;
     coolDown = 2.0f;
 }
 
 // Update is called once per frame
 void Update () {
     if(attackTimer > 0)
         attackTimer -= Time.fixedDeltaTime;
     
     if(attackTimer < 0)
         attackTimer = 0;
     
     if(Input.GetKeyUp(KeyCode.F)) {
         if(attackTimer ==0){
             Attack();
             attackTimer = coolDown;
         }
     }
     
 }
 
 private void Attack() {
     float distance = Vector3.Distance(target.transform.position, transform.position);
     
     Vector3 dir = (target.transform.position - transform.position).normalized;
         
     float direction = Vector3.Dot(dir, transform.forward);
     
     Debug.Log(direction);
     
     if(distance < 2.5f) {
         if(direction > 0) {
         EnemyHealth eh = (EnemyHealth)target.GetComponent("EnemyHealth");
         eh.AddjustCurrentHealth(-10);
         }
     }
 }

}