Deserialize parameters before printing them

pkg/analyzer/lib/src/dart/element/element.dart

Index: pkg/analyzer/lib/src/dart/element/element.dart
diff --git a/pkg/analyzer/lib/src/dart/element/element.dart b/pkg/analyzer/lib/src/dart/element/element.dart
index 22f961b78f5f23d1f15bc74c7b0df1702dd099e3..c73d79820af583c0184385a5a56d18ec6e6a68e1 100644
--- a/pkg/analyzer/lib/src/dart/element/element.dart
+++ b/pkg/analyzer/lib/src/dart/element/element.dart
@@ -4782,12 +4782,13 @@ class FunctionTypeAliasElementImpl extends ElementImpl
       buffer.write(">");
     }
     buffer.write("(");
-    int parameterCount = _parameters.length;
+    List<ParameterElement> parameterList = parameters;
+    int parameterCount = parameterList.length;
     for (int i = 0; i < parameterCount; i++) {
       if (i > 0) {
         buffer.write(", ");
       }
-      (_parameters[i] as ParameterElementImpl).appendTo(buffer);
+      (parameterList[i] as ParameterElementImpl).appendTo(buffer);
     }
     buffer.write(")");
     if (type != null) {