Spawning a structure on server start?

Hello,

I want make some plugin on rust to spawn some structure when the server is initialized. There is many event handler in oxide's documentation but this isn't what i want. So i started to look some plugin and i find one who build foundation where the player look. I look the code

Code:

/////////////////////////////////////////////////////
        ///  SpawnStructure()
        ///  Function to spawn a block structure
        /////////////////////////////////////////////////////
        private static void SpawnStructure(string prefabname, Vector3 pos, Quaternion angles, BuildingGrade.Enum grade, float health)
        {
            GameObject prefab = GameManager.server.CreatePrefab(prefabname, pos, angles, true);
            if (prefab == null)
            {
                return;
            }
            BuildingBlock block = prefab.GetComponent<BuildingBlock>();
            if (block == null) return;
            block.transform.position = pos;
            block.transform.rotation = angles;
            block.gameObject.SetActive(true);
            block.blockDefinition = PrefabAttribute.server.Find<Construction>(block.prefabID);
            block.Spawn();
            block.SetGrade(grade);
            if (health <= 0f)
                block.health = block.MaxHealth();
            else
                block.health = health;
            block.SendNetworkUpdate(BasePlayer.NetworkQueue.Update);
        }

How do you find that there is a function 'Spawn'? I didn't find any ide for oxide C#. Do you have one?

Anyone could help me?