Merge pull request #15882 from thatch45/if_fix_ssh

restore missing dict check
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error
Fix sphinx build error