The expression return self::instance could return the type null which is incompatible with the type-hinted return Startwind\Inventorio\Exec\System. Consider adding an additional type-check to rule them out.
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}
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public function getDiskTotalSpace($directory): float
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{
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return disk_total_space($directory);
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}
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public function getDiskFreeSpace($directory): float
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{
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return disk_free_space($directory);
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}
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public function getLoadAverage(): array
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{
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return sys_getloadavg();
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}
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public function getEnvironmentVariable($name): string
startwind /
inventorio-command-line
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