// To start a Coroutine directly, use "Start(SomeCoroutine());" in REPL mode.

// To declare a coroutine, you will need to compile it separately. For example:
public class MyCoro
{
    public static IEnumerator Main()
    {
		while(true){
			GameObject go = GameObject.Find("Player_Target");
			if(go != null ) {
				Rigidbody[] rigs = go.transform.GetComponentsInChildren<Rigidbody>();
				for(int i = 0; i < rigs.Length; i++) { 
					var rig = rigs[i];
					//Debug.Log(rig.gameObject.name);
					Debug.DrawLine(rig.transform.position, rig.transform.position + 10*rig.transform.forward);
				}
			}
			yield return null;
	    }
    }
}
// To run this Coroutine in REPL, it would look like "Start(MyCoro.Main());"





Start(MyCoro.Main());