<status value="active" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Bundle.entry" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <snapshot> <element id="Extension"> <path value="Extension" /> <definition value="buybil info." /> <min value="0" /> <max value="*" /> <base> <path value="Extension" /> <min value="0" /> <max value="*" /> </base> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <rules value="open" /> </slicing> <definition value="An Extension" /> <min value="0" /> <max value="0" /> <base> <path value="Element.extension" /> <min value="0" /> <max value="*" /> </base> <type> <code value="Extension" /> </type> </element> <element id="Extension.url"> <path value="Extension.url" /> <definition value="Source of the definition for the extension code - a logical name or a URL." /> <min value="1" /> <max value="1" /> <base> <path value="Extension.url" /> <min value="1" /> <max value="1" /> </base> <type> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> <valueUrl value="uri" /> </extension> <code value="http://hl7.org/fhirpath/System.String" /> </type> <fixedUri value="http://carmetx.com/fhir/extensions/StructureDefinition/internalreference" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <short value="Value of extension" /> <definition value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/5.0.0-snapshot3/extensibility.html) for a list)." /> <min value="1" /> <max value="1" /> <base> <path value="Extension.value[x]" /> <min value="0" /> <max value="1" /> </base> <type> <code value="string" /> </type> </element> </snapshot> <differential> <element id="Extension"> <path value="Extension" /> <min value="0" /> <max value="*" /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <max value="0" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://carmetx.com/fhir/extensions/StructureDefinition/internalreference" /> </element> <element id="Extension.valueString"> <path value="Extension.value[x]" /> <min value="1" /> <type> <code value="string" /> </type> </element> </differential> </StructureDefinition>