Boolean
Magento\Customer\Model\Metadata\Form\Boolean
What it does
This class handles boolean form elements for customer attributes in Magento 2, specifically converting true/false values (1/0) into human-readable 'Yes'/'No' text.
Developers would use this when working with customer attribute forms that need to display boolean values, such as newsletter subscriptions or account preferences.
It extends the Select class to provide specialized boolean handling with localized output.