public int getLink() {
		return sh_link;
	}
This member holds extra information, whose interpretation 
depends on the section type.

If sh_type is SHT_SYMTAB, SHT_DYNSYM, or SHT_DYNAMIC, 
then sh_link holds the section header table index of
its associated string table.

If sh_type is SHT_REL, SHT_RELA, or SHT_HASH
sh_link holds the section header index of the 
associated symbol table.

@return the section header link
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/elf/ElfSectionHeader.java