Some AWT's methods should specify throwing NPE for null arg value

Methods java.awt.Container.add(...) specify

"Throws: NullPointerException - if comp is null"

while java.awt.Container.remove(...) doesn't. In fact it throws NPE for null arg:

public class TestNPE {
    public static void main(String[] args) {
        new java.awt.Container().remove((java.awt.Component) null);
    }
}

Exception in thread "main" java.lang.NullPointerException
at java.awt.Container.remove(Container.java:1228)
at temp.TestNPE.main(TestNPE.java:5)
...

This behavior should be documented.