红帽全球峰会22.5.6.3. 方法 getFromResource
签名：
- org.hl7.fhir.instance.model.api.IBaseMetaType getFromResource （Class<org.hl7.fhir.instance.model.api.IBaseMetaType> metaType, org.hl7.fhir.instance.model.api.IIdType id, java.util.Map<org.apache.camel.component.fhir.api.ExtraParameters> extra;
fhir/getFromResource API 方法具有下表中列出的参数：
| 参数 | 描述 | 类型 |
|---|---|---|
| extraParameters | 如需可以传递的完整参数列表，请参阅 ExtraParameters，可以是 NULL | map |
| id | id | IIdType |
| metaType | IBaseMetaType 类 | 类 |
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