This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions 
5.6.10 Resource SearchParameter - Mappings
Mappings for the searchparameter resource (see Mappings to Other Standards for further information & status).
SearchParameter | conformance.behavior |
url | FiveWs.identifier |
identifier | FiveWs.identifier |
version | FiveWs.version |
status | FiveWs.status |
experimental | FiveWs.class |
date | FiveWs.recorded |
publisher | FiveWs.witness |
purpose | FiveWs.why[x] |