Question: how to use fhir api?
Answer: Step 1: Setup. FHIR provides some official API code libaraies in Java and . ... 
Step 2: Create a basic Patient. Upon creating a new project, you'll see a new blank class not much different from this: ... 
Step 3: Upload your basic Patient. ... 
Step 4: Search for a resource. ... 
Step 5: Run an operation.