/// <summary>
/// get (the) touchpoint id using the outward code
/// </summary>
/// <param name="theCandidate">the candidate</param>
/// <param name="usingScope">using (the logging) scope</param>
/// <returns>the LAD code</returns>
public async Task <string> GetTouchpointIDFromOutwardCode(string theCandidate, IScopeLoggingContext usingScope)
{
await usingScope.EnterMethod();
It.IsEmpty(theCandidate)
.AsGuard <ArgumentNullException>(nameof(theCandidate));
await usingScope.Information($"seeking postcode via outward code: '{theCandidate}'");
var result = await Postcode.LookupOutwardCodeAsync(theCandidate);
It.IsEmpty(result)
.AsGuard <NoContentException>();
await usingScope.ExitMethod();
return(await GetTouchpointIDFromPostcode(result.FirstOrDefault(), usingScope));
}
