Ensures that the instance is safe to be returned by the pool.
<p>
The default implementation always returns {@code true}.
</p>
@param key the key used when selecting the object
@param p a {@code PooledObject} wrapping the instance to be validated
@return always <code>true</code> in the default implementation
Ensures that the instance is safe to be returned by the pool. <p> The default implementation always returns {@code true}. </p>
@param key the key used when selecting the object @param p a {@code PooledObject} wrapping the instance to be validated @return always <code>true</code> in the default implementation