How can you mark a test as skipped if the annotated data provider returns an empty array?

FooTest.php

<?php

namespace Foo;

class BarTest extends PHPUnit_Framework_TestCase
{

    protected function setUp()
    {
        if (null === $this->providerBaz()) {
            $this->markTestSkipped('No data');
        }
    }
    
    /**
     * @dataProvider providerBaz
     *
     * @param string $baz
     */
    public function testBaz($baz)
    {
        // ...
    }

    /**
     * @return array
     */
    public function providerBaz()
    {
        // retrieve some data, may not have any
        
        if (0 === count($data)) {
            return null;
        }
        
        // return a not-empty array
    }
}

I'm aware that this is only an interesting problem until providerBaz() returns a non-empty array - which should be pretty soon, but I'd still prefer not get a warning until then.

Running the test suite currently fails with

There was 1 failure:

1) Warning
No tests found in suite "Foo\BarTest::testBaz".

Maybe just prime the argument set array in the provider with an empty record?