1a5f9918aSopenharmony_ci# A document may be null. 2a5f9918aSopenharmony_ci--- 3a5f9918aSopenharmony_ci--- 4a5f9918aSopenharmony_ci# This mapping has four keys, 5a5f9918aSopenharmony_ci# one has a value. 6a5f9918aSopenharmony_ciempty: 7a5f9918aSopenharmony_cicanonical: ~ 8a5f9918aSopenharmony_cienglish: null 9a5f9918aSopenharmony_ci~: null key 10a5f9918aSopenharmony_ci--- 11a5f9918aSopenharmony_ci# This sequence has five 12a5f9918aSopenharmony_ci# entries, two have values. 13a5f9918aSopenharmony_cisparse: 14a5f9918aSopenharmony_ci - ~ 15a5f9918aSopenharmony_ci - 2nd entry 16a5f9918aSopenharmony_ci - 17a5f9918aSopenharmony_ci - 4th entry 18a5f9918aSopenharmony_ci - Null 19