public function getSharpenPresets()
{
return ['non-existing' => ['foobar', 2, 1, 1, 0.05], 'light' => ['light', 2, 1, 1, 0.05], 'moderate' => ['moderate', 2, 1, 2, 0.05], 'strong' => ['strong', 2, 1, 3, 0.025], 'extreme' => ['extreme', 2, 1, 4, 0]];
}