Debug.LogWarning
static function LogWarning(message: object): void;
static void LogWarning(object message);
static def LogWarning(message as object) as void
static function LogWarning(message: object, context: Object): void;
static void LogWarning(object message, Object context);
static def LogWarning(message as object, context as Object) as void
Parameters

message String or object to be converted to string representation for display.
context Object to which the message applies.
Description

A variant of Debug.Log that logs a warning message to the console.

When you select the message in the console a connection to the context object will be drawn. This is very useful if you want know on which object a warning occurs.

When the message is a string, rich text markup can be used to add emphasis. See the manual page about rich text for details of the different markup tags available.
	Debug.LogWarning("A warning assigned to this transform!", transform);
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Example() {
        Debug.LogWarning("A warning assigned to this transform!", transform);
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Example() as void:
		Debug.LogWarning('A warning assigned to this transform!', transform)