SAP ABAP Program LCTL6F18 (FORM update_alv_node_selection) is using

• Class (4)
• Class Method (3)

#	Object Type	Object Name	Object Description	Note
1	Class Method	CL_SALV_ITEM - SET_CHECKED	Item in Tree Structure
2	Class Method	CL_SALV_NODE - GET_HIERARCHY_ITEM	Single Node Object of Tree Structure
3	Class Method	CL_SALV_NODES - GET_NODE	All Node Objects of Tree Structure