tut1-patient search

Patient patient = null;
IGenericClient clientCCRI = ctxFHIR.newRestfulGenericClient("https://directory.spineservices.nhs.uk/STU3/");
clientODS.setEncoding(EncodingEnum.XML);
Bundle patientSearchbundle =  clientCCRI
        .search()
        .forResource(Patient.class)
        .where(Patient.IDENTIFIER.exactly().systemAndCode("https://fhir.nhs.uk/Id/nhs-number","9658220169"))
        .returnBundle(Bundle.class)
        .execute();
if (patientSearchbundle.getEntry().size()>0) {
    if (patientSearchbundle.getEntry().get(0).getResource() instanceof Patient)
       patient = (Patient) patientSearchbundle.getEntry().get(0).getResource();
}