SAP ABAP Class CL_XLF_ATTR_XML_LANG (xml:lang) is using

• Class (10)
• Interface (7)
• Class Method (15)

#	Object Type	Object Name	Object Description	Note
1	Class	CL_ABAP_UNIT_ASSERT	ABAP Unit: Assertions (see longtext)
2	Class	CL_XLF_ATTRIBUTE	Basic attribute implementation
3	Class	CL_XLF_ATTRIBUTE	Basic attribute implementation
4	Class	CL_XLF_ATTR_XML_LANG	xml:lang
5	Class	CL_XLF_RFC5646_PARSER	RFC5646 language tag parser
6	Class	CL_XLF_XML_ATTRIBUTE	Basic XML attribute implementation
7	Class	CL_XLF_XML_ATTRIBUTE	Basic XML attribute implementation
8	Class	CX_XLF_ILLEGAL_ARGUMENT	An illegal argument was passed
9	Class	CX_XLF_ILLEGAL_ARGUMENT	An illegal argument was passed
10	Class	CX_XLF_RFC5646_INVALID_TAG	Exception thrown on invalid RFC5646 language tags