Which property or attribute should be informed in the definition XML of the repository, so that the created property would appear as a password input in BCC?
If this is not achieved by specifying a property/attribute in the definition XML, then how is it done?
I don't think there is any default attribute available for showing a property as password input in BCC. And I think the only way this can be done is through view mapping. Probably what you can try to do is to define a view mapping corresponding to your property and within that view mapping you can specify your custom property view which can render it as a password input. Or try to add some custom property view attributes to the default view responsible for rendering your property and then within that view check for the attributes so that you can change the view as a password input.