XLIFF Filter state-qualifier property not really read-write

[YvesS]

The XLIFF Filter extracts the target state-qualifier attribute when available in the property Property.STATE_QUALIFIER. But it is marked as read-write while it is actually read-only.

The quick fix would be to change the property flag to make it match the reality.

The better fix would be to implement the update/addition of the attribute so the property flag becomes correct.

[Chase Tingley]

What did you have in mind here? It looks like code could either call setTargetProperty() to change the property value later on, or get the existing property instance and call setValue() on it. (I don't see how the isReadOnly flag is currently enforced.)

Were you thinking of something more explicit?