text: for p in 0 to 10 {
     () 
  }
  
  for p in 10 downto 0 {
     () 
  }
  
  for (p in a to b) {
    ()
  }
  
  for (p in a to b) {
    let a = 1
    let b = 2
    a + b
  }
  
  // (x +1) { -> not an arrow expression
  for p in 0 to (x + 1) {
    ()
  }
  