groovy: what happened when you use backslash as last character in "Slashy string"

slashy_string_ending_with_backslash_issue.groovy

/* 
    Example what happened when you use backslash in Slashy string (https://groovy-lang.org/syntax.html#_slashy_string) 

    Note: there is a note that you are not supposed to do that in https://groovy-lang.org/syntax.html#_special_cases
    "A consequence of slash escaping is that a slashy string can’t end with a backslash"
*/

import groovy.io.*

// def dir = new File(/C:\Users/) // WORKS (removed last slash)
// def dir = new File("C:\\Users\\") // WORKS
// def dir = new File("C:\\Users") // WORKS

// from statement below any GString with interpolation or comments doesn't work (ie. cannot be compiled)
def dir = new File(/C:\Users\/)

def expressionWorks = 1+1
println expressionWorks
println "GString without interpolation works"
println 'String works'

dir.eachFile({ file -> 
  "expression below is not working, remove it (commenting doesn't work either) and it starts to work"
  println "${file}"  

  "working expressions"
  println file
  println "file" 
})