Propose to make the \Magento\Framework\App\Config\ScopePool::_getScopeCode() public because it is useful to calculate cache keys based on a scope (like \Magento\Framework\App\Config\ScopePool::getScope() does)

[dmitrii_fediuk]

https://github.com/magento/magento2/blob/2.0.0/lib/internal/Magento/Framework/App/Config/ScopePool.php#L107-L127

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https://github.com/magento/magento2/blob/2.0.0/lib/internal/Magento/Framework/App/Config/ScopePool.php#L74

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https://github.com/magento/magento2/issues/2995

[dmitrii_fediuk]

See also:

• The \Magento\Framework\App\Config\ScopePool::_getScopeCode() method has a wrong PHPDoc type for the $scopeCode parameter.