1a5f9918aSopenharmony_ci[ 2a5f9918aSopenharmony_ci? explicit key1 : explicit value, 3a5f9918aSopenharmony_ci? explicit key2 : , # Explicit empty 4a5f9918aSopenharmony_ci? explicit key3, # Implicit empty 5a5f9918aSopenharmony_cisimple key1 : explicit value, 6a5f9918aSopenharmony_cisimple key2 : , # Explicit empty 7a5f9918aSopenharmony_ci] 8