How do I convert an ISO 8601 string to a Delphi TDate?

I can convert a Delphi TDate to ISO 8601 format easily using this:

DateTimeToString(result, 'yyyy-mm-dd', myDate);

What's the idiomatic way to do the inverse conversion? StringToDateTime() doesn't seem to exist.

Obviously I can do it the "hard" way by manually parsing the string and encoding the result, but that seems a poor choice.