Template:Exists

Template to check if an element exists in a certain version. If yes, the Syntax will be displayed. Otherwise a notice will appear.

The template employs Template:Duplicate to return the location of automatically generated content for the respective element in the respective version and transcludes it. If there is no such content, an alternative text will appear.

This template is designed to serve template:robot.

Example

{{exists|subschema=RS|element=owner|version=3.1}}

delivers:

This element does not appear in railML^® 3.1 within the RS subschema. It is available only in railML^® 3.2. Do not hesitate to contact railML.org for further questions.

(Which is an alternative text, as RS:owner/3.1 is empty)

{{exists|subschema=RS|element=owner|version=3.2}}

delivers:

Autoexport from the XML-Schema for element RS:owner of railML® version 3.2      UML-visualization of RS
Documentation	The reference to the organisationalUnit, which owns the vehicle. The designator contains any register ID as per the owner. This may be the national railway vehicle register. The name is any name of the vehicle was given from the owner.
Subschema	rollingstock
Parents*	administrativeData
Children	designator (0..*), name (0..*)
Attributes: class: The class name as used by the organizational unit. (optional; xs:string), refersTo: The reference to the organizational unit. (obligatory; xs:string; patterns: (urn:uuid:)?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}|\{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}\})
*Notice: Elements may have different parent elements. As a consequence they may be used in different contexts. Please, consider this as well as a user of this wiki as when developing this documentation further. Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.

(Which is the transclusion of RS:owner/3.2)