p 6, sec 3.1.2. The "sort-by" Query Parameter

[flycoolman]

(6) p 6, sec 3.1.2. The "sort-by" Query Parameter
Allowed Values
The allowed values are node identifiers. It is an error if the
specified node identifier does not exist in the schema, is
optional or conditional in the schema or, for constrained "config
false" lists and leaf-lists (see Section 3.3), if the node
identifier does not point to a node having the "indexed" extension
statement applied to it (see Section 3.3.2).
Conformance
The "sort-by" query parameter MUST be supported for all "config
true" lists and leaf-lists and SHOULD be supported for "config
false" lists and leaf-lists. Servers MAY disable the support for
some or all "config false" lists and leaf-lists as described in
Section 3.3.2.
For clarity, for configuration, clients are allowed to request sorting by
any data node within the list entry?