/**
* Evaluates the expression, creating an array if the value is unset..
*
* @param env the calling environment.
* @return the expression value.
*/
@Override
public Value evalArray(Env env) {
Value obj = env.getThis();
if (obj.isNull()) {
return cannotUseThisError(env);
}
return obj.getThisFieldArray(env, _name);
}
