define XPATH for self closing xml tags

[Ritesh Khapre]

Hi

I am using nokogiri  XPATH in logstash

In xml file, there is self-closing xml tag, which return null value.

How can i replace this null value with some string like 'blank' by using xpath operator

or is there any better way to define the xpath for self-closing xml tags

xpath => [
        "/Envelope/Body/response/table/row/description/text()","description"  
]