====== Null value in groovy scripts ======

{{tag> groovy script}}

In groovy script is **NULL** constant represent by object. On this object you can call some methods. See example:

<code>
​def attr = null;
def attr2 = attr.toString();


return attr2 + "b";​​​​
</code>

Return value will be **nullb**. Be careful when defining the root of the tree and in another scripts.