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use crate::ctx::GenContext; pub fn gen(ctx: &mut GenContext<'_>, buf: &mut String) { let p = if ctx.rng.maybe(0.5) { "vc_prod_" } else { "vc_test_" }; buf.reserve(8 + 32); buf.push_str(p); ctx.rng.push_alnum(buf, 32); }