+STR
+DOC ---
+MAP
=VAL :key
=VAL :value
=VAL :
=VAL :empty key
-MAP
-DOC
+DOC ---
+MAP {}
=VAL :key
=VAL :value
=VAL :
=VAL :empty key
-MAP
-DOC
+DOC ---
+MAP
=VAL :
=VAL :
-MAP
-DOC
+DOC ---
+MAP {}
=VAL :
=VAL :
-MAP
-DOC
-STR
