anchor.diff:      FunctionInfo info = new FunctionInfo(
           name: name,
           functionKind: kind,
  -        // We use element.hashCode because it is globally unique and it is
  -        // available while we are doing codegen.
  -        coverageId: '${element.hashCode}',
           modifiers: modifiers,
           returnType: returnType,
           inferredReturnType: inferredReturnType,
  
positive.code: 
      FieldInfo info = new FieldInfo(
          name: element.name,
          // We use element.hashCode because it is globally unique and it is
          // available while we are doing codegen.
          coverageId: '${element.hashCode}',
          type: '${element.type}',
          inferredType: '$inferredType',
          code: code,
  
negative.code:       size += closureSize;
      } else {
        info.closures = <ClosureInfo>[];
      }
  
      if (JavaScriptBackend.TRACE_METHOD == 'post') {
        // We use element.hashCode because it is globally unique and it is
        // available while we are doing codegen.
        info.coverageId = '${element.hashCode}';
      }
  
      info.size = size;
  