How to use

onInstance

method

in

ca.uhn.fhir.rest.gclient.IHistory

.onInstance(new IdType("Patient/123"))
.andReturnBundle(Bundle.class)
.preferResponseType(MyPatient.class)

/**
 * Perform the operation across all versions of a specific resource (by ID and type) on the server.
 * Note that <code>theId</code> must be populated with both a resource type and a resource ID at
 * a minimum.
 * @param id the {@link IIdType} which must be populated with both a resource type and a resource ID at
 * @param returnType Request that the method return a Bundle resource (such as <code>ca.uhn.fhir.model.dstu2.resource.Bundle</code>).
 *                Use this method if you are accessing a DSTU2+ server.
 * @param count Request that the server return only up to <code>theCount</code> number of resources, may be NULL
 * @param cutoff Request that the server return only resource versions that were created at or after the given time (inclusive), may be NULL
 * @param iCutoff Request that the server return only resource versions that were created at or after the given time (inclusive), may be NULL
 * @param <T> extends {@link IBaseBundle}
 * @param extraParameters see {@link ExtraParameters} for a full list of parameters that can be passed, may be NULL
 * @throws IllegalArgumentException If <code>id</code> does not contain at least a resource type and ID
 * @return the {@link IBaseBundle}
 */
public <T extends IBaseBundle> T onInstance(IIdType id, Class<T> returnType, Integer count, Date cutoff, IPrimitiveType<Date> iCutoff, Map<ExtraParameters, Object> extraParameters) {
  IHistoryTyped<T> tiHistoryTyped = client.history().onInstance(id).andReturnBundle(returnType);
  processOptionalParams(count, cutoff, iCutoff, tiHistoryTyped);
  ExtraParameters.process(extraParameters, tiHistoryTyped);
  return tiHistoryTyped.execute();
}