ora:get-Content-as-string

Hi,
In my previous post i wrote about a custom xpath function to convert a string representation of XML to a XML.
In this post lets see a function which the reverse of this.
This function can be used to convert a XML to a string.
for ex:
xsl:value-of select ="orcl:get-content-as-string(/nso:Booklist/nso:Bookdesc:desc")

Happy Learning