private static ImmutableArray <IIdentifier> GetNameParts(IIdentifier id1, IIdentifier id2, string name)
{
if (name is null)
{
throw new ArgumentNullException(nameof(name));
}
var invokeIdPartCount = GetCount(name);
var parts = new IIdentifier[2 + invokeIdPartCount];
parts[0] = id1;
parts[1] = id2;
SetParts(parts.AsSpan(start: 2, invokeIdPartCount), name);
return(ImmutableArray.Create(parts));
}