src/Helpers/ReflectionHelper.php
public static function isImplements($className, $interfaceName)
    {
        $implementations = class_implements($className, true);
        return isset($implementations[$interfaceName]);
    }
public static function isImplements($className, $interfaceName)
    {
        $implementations = class_implements($className, true);
        return isset($implementations[$interfaceName]);
    }
Check that class (by name) implements some interface
@param string $className
@param string $interfaceName
@return bool