Preconditions library to throw IllegalArgumentException for notNull check

Since the topic of this question evolved into "Correct usage of IllegalArgumentException and NullpointerException", I would like to point out the strait forward answer in Effective Java Item 60 (second edition):

Arguably, all erroneous method invocations boil down to an illegal argument or illegal state, but other exceptions are standardly used for certain kinds of illegal arguments and states. If a caller passes null in some parameter for which null values are prohibited, convention dictates that NullPointerException be thrown rather than IllegalArgumentException. Similarly, if a caller passes an out-ofrange value in a parameter representing an index into a sequence, IndexOutOfBoundsException should be thrown rather than IllegalArgumentException.

What about Preconditions's checkArgument?

public void call(Person person) {
    Preconditions.checkArgument(person.getPhone() != null);
    // cally things...
}

checkArgument throws IllegalArgumentException instead of NullPointerException.