Problem/Motivation
In #2991232: Add hasRole method to AccountProxy and UserSession classes we added hasRole() implementation to AccountProxy.php and UserSession.php classes. The AccountInterface remained unchanged to keep it compatible with existing contrib and custom AccountInterface implementations.
Proposed resolution
Move method hasRole() definition to AccountInterface.
Remaining tasks
Wait for 10.x branch;
Commit
Review;
API changes
AccountInterface has been extended with a new method - AccountInterface::hasRole().