fn addExtra(wip: *Wip, extra: anytype) Allocator.Error!u32 wip: *Wipextra733
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738 fn addExtra(wip: *Wip, extra: anytype) Allocator.Error!u32 {
const gpa = wip.gpa;
const fields = @typeInfo(@TypeOf(extra)).@"struct".field_names;
try wip.extra.ensureUnusedCapacity(gpa, fields.len);
return addExtraAssumeCapacity(wip, extra);
}