It seems like $routeSecurityTools->isAccessControlEnable() can also be of type Sil\RouteSecurityBundle\...iler\RouteSecurityTools; however, parameter $condition of PHPUnit\Framework\Assert::assertTrue() does only seem to accept boolean, maybe add an additional type check?
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Ignorable by Annotation
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If this is a false-positive, you can also ignore this issue in your code via the ignore-type annotation