红帽全球峰会22.5.6.5. 方法 getFromType
签名：
- org.hl7.fhir.instance.model.api.IBaseMetaType getFromType（Class<org.hl7.fhir.instance.model.api.IBaseMetaType> metaType, String resourceType, java.util.Map<org.apache.camel.component.fhir.api.ExtraParameters> extraParamers>
fhir/getFromType API 方法有下表中列出了的参数：
| 参数 | 描述 | 类型 |
|---|---|---|
| extraParameters | 有关可传递的参数的完整列表，请参阅 ExtraParameters，可以是 NULL | map |
| metaType | IBaseMetaType 类 | 类 |
| resourceType | 资源类型，如 Patient | 字符串 |
除了以上参数外，Fhir API 还可使用任何 Query 参数。
任何参数都可以在端点 URI 中提供，也可以在消息标头中动态提供。邮件标题名称必须为 CamelFhir.parameter.inBody 参数覆盖消息标头，例如，Body=myParameterNameHere 的 endpoint 参数会覆盖 CamelFhir.myParameterNameHere 标头。
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