Attribute\Collection
Magento\Customer\Model\ResourceModel\Attribute\Collection
What it does
This collection class retrieves and manages customer entity attributes in Magento 2.
Developers use this when they need to load, filter, or manipulate customer attribute data programmatically, such as when building custom forms, importing customer data, or managing attribute configurations.
It extends the base EAV attribute collection specifically for the 'customer' entity type and includes website-level attribute scope support.