Permission operands don't work

[skrat]

@permission_classes([IsAuthenticated|ReadOnly])

The above snippet doesn't work because the operator doesn't return permissions.BasePermission object. It returns permissions.OperandHolder. So the stub should be allowing for this type to be in the sequence.

[nefrob]

Bump on this since it seems to still be an issue in my testing with custom permission classes (i.e. class MyPermission(BasePermission): ...).

[sobolevn]

PRs are welcome :)