OriginalRepresenstation Section, img src value in narrativeLink Extension instead of id

[oliveregger]

In a first version the img attribute src was added as the Binary.id. This could however lead to problems because the ID element does not follow the requirements for an id. Propose to put in a narrativeLink extension instead:

      <text>
        <status value="generated"/>
        <div xmlns="http://www.w3.org/1999/xhtml">
					Representation of the original view which has been signed by the legal authenticator:
					<img src="pdf1"/>
     </div>
      </text>
      <entry>
        <reference value="Binary/pdf1"/>
      </entry>

to

    <entry>
        <extension url="http://hl7.org/fhir/StructureDefinition/narrativeLink">
          <valueUrl value="pdf1"/>
        </extension>
        <reference value="Binary/a82d680c-7fb6-4ced-8279-e8297e0fe72f"/>
      </entry>

This should be modeled in
https://fhir.ch/ig/ch-core/StructureDefinition-ch-core-composition-epr.html and the example in https://fhir.ch/ig/ch-core/Bundle-CdaContainingOriginalRepresentationAsPdfA.xml.html adjusted.

[oliveregger]

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