Removed unused import

Author: maneesht

packages/firebase_data_connect/firebase_data_connect/lib/src/common/common_library.dart

@@ -15,7 +15,6 @@
 import 'dart:convert';
 
 import 'package:firebase_app_check/firebase_app_check.dart';
-import 'package:firebase_data_connect/src/generated/graphql_error.pb.dart';
 
 part 'dataconnect_error.dart';
 part 'dataconnect_options.dart';

packages/firebase_data_connect/firebase_data_connect/lib/src/common/dataconnect_error.dart

@@ -28,30 +28,34 @@ class DataConnectError<T> extends FirebaseException {
   final DataConnectErrorCode dataConnectErrorCode;
 }
 
-class SubError {
-  SubError(this.path, this.message);
-  String message;
-  List<PathSegment> path;
-}
-
-class PathSegment {
-  PathSegment({this.field, this.listIndex});
-  String? field;
-  int? listIndex;
+/// Error thrown when an operation is partially successful.
+class DataConnectOperationError extends DataConnectError {
+  DataConnectOperationError(
+      DataConnectErrorCode code, String message, this.response)
+      : super(code, message);
+  final DataConnectOperationResponse response;
 }
 
+/// Nested class containing errors and decoded data.
 class DataConnectOperationResponse<T> {
   DataConnectOperationResponse(this.errors, this.data, this.decodedData);
   final Map<String, dynamic>? data;
-  final List<SubError> errors;
+  final List<ResponseError> errors;
   final T? decodedData;
 }
 
-class DataConnectOperationError extends DataConnectError {
-  DataConnectOperationError(
-      DataConnectErrorCode code, String message, this.response)
-      : super(code, message);
-  final DataConnectOperationResponse response;
+/// Error information per error.
+class ResponseError {
+  ResponseError(this.path, this.message);
+  String message;
+  List<PathSegment> path;
+}
+
+/// Path where error occurred.
+class PathSegment {
+  PathSegment({this.field, this.listIndex});
+  String? field;
+  int? listIndex;
 }
 
 typedef Serializer<Variables> = String Function(Variables vars);

packages/firebase_data_connect/firebase_data_connect/lib/src/network/grpc_transport.dart

@@ -175,8 +175,8 @@ Data handleResponse<Data>(CommonResponse<Data> commonResponse) {
     Map<String, dynamic>? data =
         jsonDecode(jsonEncoded) as Map<String, dynamic>?;
     Data? decodedData;
-    List<SubError> errors = commonResponse.errors
-        .map((e) => SubError(
+    List<ResponseError> errors = commonResponse.errors
+        .map((e) => ResponseError(
             e.path.values
                 .map((val) => val.hasStringValue()
                     ? PathSegment(field: val.stringValue)

packages/firebase_data_connect/firebase_data_connect/lib/src/network/rest_transport.dart

@@ -143,11 +143,11 @@ class RestTransport implements DataConnectTransport {
         }
         List<dynamic> errors =
             jsonDecode(jsonEncode(bodyJson['errors'])) as List<dynamic>;
-        List<SubError> suberrors = errors
+        List<ResponseError> suberrors = errors
             .map((e) {
               return jsonDecode(jsonEncode(e)) as Map<String, dynamic>;
             })
-            .map((e) => SubError(
+            .map((e) => ResponseError(
                 (e['path'] as List)
                     .map((val) => val.runtimeType == String
                         ? PathSegment(field: val)