public async void InvokeValidateCodeById()
{
var client = new FhirClient(FhirClientTests.TerminologyEndpoint);
var coding = new Coding("http://snomed.info/sct", "4322002");
var result = await client.ValidateCodeAsync("c80-facilitycodes", coding : coding, @abstract : new FhirBoolean(false));
Assert.IsTrue(result.Result?.Value == true);
}