Nested Definitions in Spock

nested_definitions.groovy

def "parse page offset request"(){
   scenario "should return default OFFSET when no value is present"
       given:
       when:
       then:
    scenario "should return the integer representation of the present value"
      given:
      when:
      then:
    scenario: "should return the default OFFSET if a non numeric value is present"
     given:
     when:
     then:
}