Method Reserve

KBotExt/imgui/imgui_internal.h:667–667

	void        Remove(ImGuiID key, const T* p) { Remove(key, GetIndex(p)); }
	void        Remove(ImGuiID key, ImPoolIdx idx) { Buf[idx].~T(); *(int*)&Buf[idx] = FreeIdx; FreeIdx = idx; Map.SetInt(key, -1); AliveCount--; }
	void        Reserve(int capacity) { Buf.reserve(capacity); Map.Data.reserve(capacity); }

	// To iterate a ImPool: for (int n = 0; n < pool.GetMapSize(); n++) if (T* t = pool.TryGetMapData(n)) { ... }
	// Can be avoided if you know .Remove() has never been called on the pool, or AliveCount == GetMapSize()