Function largest_page_sizes 

pub fn largest_page_sizes() -> Variables

The largest value this source can bind to each page-size variable its documents name.

Every first: in graphql reads one of these three, and each is capped at the constant above it wherever a caller’s own limit could reach it — $first at MAX_PAGE_SIZE, $nestedFirst at NESTED_PAGE_SIZE, $boardItems at BOARD_ITEMS_PAGE_SIZE. So this is the worst case a caller can drive this source to, not one configuration of it, which is what makes a bound computed under it a bound on every read.