---Check if action_type is SUMMON_IN_CHAIN.
---@return boolean
function Duel.IsSummonInChain() end
---Check player can pendulum summon.
---@return boolean
---@param player integer
---@param summon_group? Group|nil default: nil
function Duel.IsPlayerCanPendulumSummon(player,summon_group) end
---player pendulum summon summon_group.
---@param player integer
---@param summon_group Group|nil
function Duel.PendulumSummon(player,summon_group) end
---Check if player pendulum summoned by rule.
---(not use EFFECT_EXTRA_PENDULUM_SUMMON.)
---@param player integer
function Duel.IsPlayerDefaultPendulumSummoned(player) end
---player pendulum summoned by rule.
---@param player integer
function Duel.UseDefaultPendulumSummon(player) end
Add these functions: