SAP ABAP Class CL_DD_STRUCTURE (Structure within the structure browser) is using

• Class (25)
• Data Element (24)
• Table/Structure Field (53)
• Function Module (8)
• Interface (1)
• Class Method (82)
• Table (39)
• View (13)

#	Object Type	Object Name	Object Description	Note
1	Interface	IF_SERIALIZABLE_OBJECT	Serializable Object