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.apache.camel.component.fhir.api.ExtraParameters, Object> extraParameters);
fhir/getFromType API 方法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 |
| metaType | IBaseMetaType 类 | 类 |
| resourceType | 资源类型，如 Patient | 字符串 |
除了上述参数外，fhir API 也可以使用任何 Query 参数。
任何参数都可以在端点 URI 中提供，或者在消息标头中动态提供。邮件标题名称必须是 CamelFhir.parameter 的格式。inBody 参数覆盖消息标头，即 Body=myParameterNameHere 中的端点参数将覆盖 CamelFhir.myParameterNameHere 标头。
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