Get a string value either from the query string (first priority) or from the options object (second priority)
NOTICE: often the query param's property name differs from the options object's property name so be aware.
Going forward it's easier if they are the same. See QUERY_STRING_DOC_SELECTED for an example.
Get a string value either from the query string (first priority) or from the options object (second priority)
NOTICE: often the query param's property name differs from the options object's property name so be aware. Going forward it's easier if they are the same. See QUERY_STRING_DOC_SELECTED for an example.