/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
public override void evalUnset(Env env)
{
_expr.evalUnsetArray(env, _index);
}
/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
public override void evalUnset(Env env)
{
_expr.evalUnsetArray(env, _index);
}