anchor.diff:                secret: (( .web_server.generated_secret_to_migrate_to_credhub_<%= major_and_minor_version %>.value ))
             configured:
               string: (( .web_server.example_string.value ))
  +            cron_schedule: (( .web_server.example_cron.value ))
               integer: (( .web_server.example_migrated_integer.value ))
               boolean: (( .web_server.example_boolean.value ))
               dropdown: (( .web_server.example_dropdown.value ))
  
positive.code:       - reference: .web_server.example_string
          label: Example string
          description: 'Configure a property of type string'
        - reference: .web_server.example_string_with_placeholder
          label: Example string containing Placeholder text
          description: 'Optional field. Configuration not necessary'
  
negative.code:         error_message: 'This name cannot contain special characters.'
        - must_match_regex: '\A[^0-9]*\z'
          error_message: 'This name cannot contain digits.'
      - name: example_cron
        type: string
        configurable: true
        optional: true
        constraints:
          - must_be_cron_schedule: true
            error_message: 'This must be a valid cron schedule.'
      - name: example_migrated_integer
        type: integer
        configurable: true
  