This command implementation is used to modify the description(s) of catalog entries.
The command is given the catalog entry noun and list of action expressions
to act upon the noun.
If a catalog entry description is not found in the database, this command will create a new catalog entry description.
If a catalog entry description already exists in the database, it will update the description in the database
using the value passed in the request.
The description is locale dependent data. Multiple descriptions in diferent languages can be updated in a single
request for a given catalog entry. Language ID must be specified for for each description noun part. If the language
ID is supported by store in current context, the description data will be updated in database if it already exists.
If description does not exists for a given language ID, it will be created. If language ID specified is not supported
by the store in current context, a validaion error will be thrown.
This command implementation does not support deleting a catalog entry description.