WSS PasswordType - groovy script

Hi All,

I have created a groovy script for assigning username and password for all the test request.
Please find the code snippet as below.

wsdlTestSteps.each{
        it.properties['Endpoint'].value = "endpoint value"
           it.properties['Username'].value = "username"
           it.properties['Password'].value = "password"
     }

Please suggest how can I set the password type(WSS-PasswordType) i.e my case it will be 'passwordDigest'.

Thanks & Regards
Saravanan Ramamoorthy