EXECUTE: Create a CDI project (or enable CDI support on some existing project).
EXECUTE: Create

package org.test;

public class FooBean {
}

package org.test;

public class FooBeanX extends FooBean {
}

package org.test;

import javax.inject.Inject;

public class TestBean {
    @Inject FooBean foo;
}

EXECUTE: Build the project.
ASSERT: There is a problem marker on @Inject FooBean foo: Multiple beans are eligible for injection to the injection point [JSR-299 §5.2.1]
EXECUTE: Click on the problem to show all the available quick fixes.
EXECUTE: Select Specify FooBeanX Bean for the Injection Point.
ASSERT: Specify CDI Bean for the Injection Point wizard appears.
EXECUTE: Click on "Create New Qualifier" button.
EXECUTE: Input "SomeNewQualifier" as a name of the qualifier and press Finish.
FAILURE: The Default qualifier still in "In The Bean" list