Is gm shell support optional?

[rootulp]

Context

hermes/guide/src/tutorials/pre-requisites/gaiad-manager.md

Lines 45 to 47 in 070f60d

	3. Activate `gm`
	* Add `source $HOME/.gm/bin/shell-support` to a file that executes when a new terminal window comes up
	(`$HOME/.bash_profile` or `$HOME/.bashrc` or `$HOME/.zprofile`)

Problem

When I add that line to my .zprofile, I encounter:

/Users/rootulp/.gm/bin/shell-support:117: command not found: complete

Proposal

This seems optional for auto completion and since it doesn't work for me out of the box, I'd appreciate if the step described that it was optional.