phpstan.neon

parameters:
    level: max

    ignoreErrors:
        # known value, container is already created
        - '#Method Fop\\DependencyInjection\\ContainerFactory::(create|createWithConfig)\(\) should return Psr\\Container\\ContainerInterface but returns Symfony\\Component\\DependencyInjection\\ContainerInterface\|null#'

        # false positive, checked or @var doc above
        - '#Parameter \#1 \$str of function strtolower expects string, string\|null given#'
        - '#Parameter \#1 \$containerBuilder of class Symplify\\PackageBuilder\\Yaml\\FileLoader\\ParameterMergingYamlFileLoader constructor expects Symfony\\Component\\DependencyInjection\\ContainerBuilder, Symfony\\Component\\DependencyInjection\\ContainerInterface given#'
        - '#Cannot cast array<string>\|string\|null to int#'