Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9741)
=item I<data_type>
-=for comment It's still debated if this field should be present, or if
-the type should always be implied by how it's used.
-Either way, these data types will have to be passed together with the
-names as an array of OSSL_ITEM, for discovery purposes.
-
The I<data_type> is a value that describes the type and organization of
the data.
See L</Supported types> below for a description of the types.