This will not affect version before 5.1.
1. Go to Admin Tools -> Model Manager and create a new model
2. For the new Model, create a Custom Type.
3. For the new Custom Type, create a Property and set as _Description _ the following
4. For the new Custom Type, add in the Layout Designer, the created Property.
5. Activate the model.
S1. Login to Share as admin and create a site.
S2. Create any document and open document description.
S3. Click on Change Type and choose the created Type.
S4. After the type is applied, click on Edit Properties and observe the new Property.
Actual Result: The new Property is injected.