@spec ets_tables(keyword()) :: [map()]

@spec process_at(:memory | :reductions | :message_queue_len, pos_integer()) ::
  pid() | nil

@spec process_info(
  pid()
  | atom()
  | String.t()
  | {:pid, pid()}
  | {:registered, atom() | String.t()}
) ::
  map() | nil

@spec runtime_info() :: map()

@spec supervision_tree(
  module() | pid() | atom() | nil,
  keyword()
) :: map() | nil

@spec top(
  :memory | :reductions | :message_queue_len,
  keyword()
) :: [map()]