Cannot create property when accessor exists

[tholsan]

Steps to reproduce: Create a class with one attribute. Create a property but with just one accessor. Open Create Property dialog again. the "Create Property" button is disabled and cannot be enabled by choosing accessor or anything. A warning "No attributes exists" is also displayed.

Expected behaviour:

• Select the possible accessor to create.
• Disable the already created accessor button (Set/get)
• Do not warn
• Enable Create Property button

It would be even better if the scope was settable for both accessors individually to begin with.