XEts.KV.pop

You're seeing just the function pop, go back to XEts.KV module for more information.
Link to this function

pop(tab, key, default \\ nil)

Specs

pop(t(), any(), any()) :: {any(), t()}

Pop an item from the table.

iex> tab = XEts.KV.new(:foo, [])
iex> tab |> XEts.KV.put(:k, :v) |> XEts.KV.pop(:k)
{:v, tab}