anchor.diff:  consumes:
   - name: database_conn
     type: conn
  +# ...
   ```
   
   Then, in the application job's templates, it can use the connection information from the link:
  
positive.code:   - username
    - password
    - name
  properties:
  - name: port
  # ...
  ```
  
  
negative.code: #!/bin/bash
  # Application's templated control script.
  # ...
  export DATABASE_HOST="<%= link('database_conn').instances[0].address %>"
  export DATABASE_PORT="<%= link('database_conn').p('port') %>"
  # ...
  ```
  
  