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value="1" /> </element> <element id="Observation.note"> <path value="Observation.note" /> <max value="1" /> <mustSupport value="true" /> </element> <element id="Observation.bodySite"> <path value="Observation.bodySite" /> <min value="1" /> <binding> <strength value="required" /> <valueSet value="http://fhir.essilorluxottica.com/fhir/ValueSet/el-eyelocation-single-vs" /> </binding> </element> <element id="Observation.component"> <path value="Observation.component" /> <slicing> <discriminator> <type value="value" /> <path value="code" /> </discriminator> <description value="Slice based on the component.code value" /> <rules value="open" /> </slicing> <min value="1" /> </element> <element id="Observation.component:VAdistanceDecimal"> <path value="Observation.component" /> <sliceName value="VAdistanceDecimal" /> <min value="0" /> <max value="1" /> <mustSupport value="true" /> </element> <element id="Observation.component:VAdistanceDecimal.code"> <path value="Observation.component.code" /> 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</type> <binding> <strength value="required" /> <valueSet value="http://fhir.essilorluxottica.com/fhir/ValueSet/el-observation-visualAcuityCode-vs" /> </binding> </element> </differential> </StructureDefinition>