<SearchParameter xmlns="http://hl7.org/fhir">
  <url value="https://example.org/fhir/SearchParameter/SearchParameter" />
  <name value="SearchParameter" />
  <status value="draft" />
  <description value="查询参数定义" />
  <code value="01" />
  <base value="List" />
  <type value="composite" />
</SearchParameter>