public function dataProviderForPMF()
{
return [[2, 1, 0.5, 0.25], [2, 1, 0.4, 0.24], [6, 2, 0.7, 0.019845], [8, 7, 0.83, 0.322919006776561], [10, 5, 0.85, 0.00424542789316406], [50, 48, 0.97, 0.245297473979909], [5, 4, 1, 0.0], [2, 2, 0.5, 0.25], [3, 1, 0.2, 0.128], [7, 3, 0.2, 0.049152]];
}