client = FHIR::Client.new(url)

reply = client.search(FHIR::Patient, search: {parameters: {name: 'P'}})
bundle = reply.resource

reply = client.read_feed(FHIR::Patient) # fetch Bundle of Patients
bundle = reply.resource
bundle.entry.each do |entry|
  patient = entry.resource
  puts patient.name[0].text
end
puts reply.code # HTTP 200 (or whatever was returned)
puts reply.body # Raw XML or JSON

# read an existing patient with id "example"
patient = client.read(FHIR::Patient, "example").resource
# specifying Formats
patient = client.read(FHIR::Patient, "example", FHIR::Formats::FeedFormat::FEED_JSON).resource

# update the patient
patient.gender = 'female'
client.update(patient, patient.xmlId)

# destroy the patient
client.destroy(FHIR::Patient, patient.xmlId)

client = FHIR::Client.new(url)
client_id = 'example'
client_secret = 'secret'
options = client.get_oauth2_metadata_from_conformance
if options.empty?
  puts 'This server does not support the expected OAuth2 extensions.'
else
  client.set_oauth2_auth(client_id,client_secret,options[:site],options[:authorize_url],options[:token_url])
  reply = client.read_feed(FHIR::Patient)
  puts reply.body
end