How to access what was `validationResult.details` in latest versions

#### Support plan

* *is this issue currently blocking your project?* (yes):
* *is this issue affecting a production system?* (no):

#### Context

* *node version*: 12.14.1
* *module version*: 17.3.0
* *environment* (e.g. node, browser, native): node
* *used with* (e.g. hapi application, another framework, standalone, ...): standalone within an express app
* *any other relevant information*:

#### How can we help?

Previously there was a properly `details` where you could get the path to an error. This is important for us because we need to tell the user where in the document tree the error occurred rather than making them hunt for which leaf node had the issue.

```
error.details.map((detail) => {
return `Error in node ${detail.path[0]}, child ${detail.path[1]}`
}
```

Using joi 16+ I only get `value` and `error` back. Is there a way to retrieve the full tree to present this information?

No source file or test is named. Start by reviewing the Joi 16+ validation API and the change from the earlier validationResult.details behavior, using the reported Node 12.14.1 and module 17.3.0 setup. Done means identifying the supported way to access error paths, or confirming that the information is unavailable.

Written by the indexing model from the issue text.