G90 Gcode question

Just diving into trying to understand g-code, in particular what Robo ships for the Octoprint presets. Just curious, at the end of the After the Print Job Completed script, I see them set to absolute positioning (G90) and then move the printer to the (0,0) spot on the current z level, then move the bed down to z=0, but then they set the absolute position mode again (with another G90 command). Why would one do this?
Is it just an oversight, or is there more to the G90 command?
thanks

; turn off heaters
M104 S0
M140 S0
; turn off fans
M107
; move bed down 10mm
G91
G1 Z10
G90
; home XY axis
G28 X0 Y0
; home bed
G28 Z0
; set absolute mode
G90
; zero extruder
G92 E0
; turn off motors
M84​

 

thanks. I'm assuming the relative mode is cause you really just want to move the bed down 10 from wherever you are at the moment (and since prints are different heights, the z could be anywhere when it finishes the print). The absolute mode is clear too, as the origin is the origin, and the bottom of the print volume is what it is regardless of where you are in the workspace.

I notice the same second G90 call in the After Print Job Is Canceled script too. Maybe a cut and paste, or like you suggest, maybe there is more to some of the commands between the two G90s