ACL Helpers (Server)

-- Add/remove ACE permission
st.addAce(principal, ace, allow)
-- principal: player source (number) or string like "group.admin"
-- ace:       string like "command.heal"
-- allow:     boolean (default true)

st.removeAce(principal, ace, allow)

-- Add/remove principal inheritance
st.addPrincipal(child, parent)
-- child:  player source or string
-- parent: string like "group.admin"

st.removePrincipal(child, parent)

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