Revert "Rename mappedBy to map."

pkg/serialization/lib/src/format.dart

 part of serialization;
 
 /**
  * An abstract class for serialization formats. Subclasses define how data
  * is read or written to a particular output mechanism.
  */
 abstract class Format {
   /**
    * Return true if this format stores primitives in their own area and uses
    * references to them (e.g. [SimpleFlatFormat]) and false if primitives
@@ skipping 143 matching lines @@
    * and return the Map representation that the reader expects, with top-level
    * entries for "rules", "data", and "roots". Nested lists/maps will be
    * converted into Reference objects. Note that if the data was not written
    * with [storeRoundTripInfo] true this will fail.
    */
   Map<String, dynamic> read(String input, Reader r) {
     var data = json.parse(input);
     var result = {};
     result["rules"] = null;
     var ruleData =
-        new List(r.serialization.rules.length).map((x) => []).toList();
+        new List(r.serialization.rules.length).mappedBy((x) => []).toList();
     var top = recursivelyFixUp(data, r, ruleData);
     result["data"] = ruleData;
     result["roots"] = [top];
     return result;
   }
 
   /**
    * Convert nested references in [data] into [Reference] objects.
    */
   recursivelyFixUp(data, Reader r, List result) {
@@ skipping 252 matching lines @@
     } else {
       return new Reference(r, a, b);
     }
   }
 
   /** Return the next element from the input. */
   _next(Iterator input) {
     input.moveNext();
     return input.current;
   }
-}
+}