WP_User::remove_cap()
Method: Removes capability from user.
Source: wp-includes/class-wp-user.php:721
WP_User::get()
Method: Retrieves the value of a property or meta key.
Source: wp-includes/class-wp-user.php:414
WP_User::remove_all_caps()
Method: Removes all of the capabilities of the user.
Source: wp-includes/class-wp-user.php:738