Where are the built-in function apis?

[fickle lichen]

Here's the link to the @call part of the docs: https://ziglang.org/documentation/0.14.1/#call
The reason you can call with too few arguments is because you set them to undefined here:

var args: std.meta.ArgsTuple(field.resolver_type) = undefined;

[thorny flicker]

yeah if you passed a tuple of only two values it would error

[flint basin]

Okay, so i did find that in the docs. But, i was wondering if i could peek inside like i can with std..