Null Pointer Exception while converting from Boolean to boolean

in neutron-spi/src/main/java/org/opendaylight/neutron/spi/NeutronNetwork.java, Null Pointer Exception while converting from Boolean to Boolean as:

example:

public boolean isAdminStateUp()

{ return adminStateUp; }

//Null Pointer Exception when adminStateUp is null.

Test Case:

vagrant@node1:~/neutron$ cat TestA.java; javac TestA.java ; java TestA
public class TestA {
Boolean adminStateUp;

public boolean isAdminStateUp()

{ return adminStateUp; }

public static void main(String[] args) {
TestA a = new TestA();
if (a.isAdminStateUp())

{ System.out.println("here"); }

}
}
Exception in thread "main" java.lang.NullPointerException
at TestA.isAdminStateUp(TestA.java:5)
at TestA.main(TestA.java:10)