Reciprocal of atspi_relation_details_for.
Indicates that this object has a detailed or extended description, the contents of which can be found in the target object(s). This
relation type is most appropriate for information that is sufficiently lengthy as to make navigation to the container of that information
desirable. For less verbose information suitable for announcement only, see atspi_relation_described_by.
If the detailed information describes an error condition, atspi_relation_error_for should be used
instead. Since: 2.26.