The method getImage isn't defined

I am using image_picker 0.6.7+17 library in order to take an image using the phone camera.
I am using an android device and not an ios device.

A problem

It seems like that getImage method is not defined, I took this exact code from the docs:

  final picker = ImagePicker();

  Future getImage() async {
    final pickedFile = await picker.getImage(source: ImageSource.camera);
  }

I am getting this error:

lib/pickers/image_picker.dart:17:37: Error: The method 'getImage' isn't defined for the class 
'ImagePicker'.
 - 'ImagePicker' is from 'package:chat_app/pickers/image_picker.dart' 
('lib/pickers/image_picker.dart').
Try correcting the name to the name of an existing method, or defining a method named 'getImage'.
final pickedFile = await picker.getImage(source: ImageSource.camera);
                                ^^^^^^^^

What I have done so far:

• Added the dependency to my pubspec.yaml: file

dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^1.0.0
  cloud_firestore: 0.13.5
  firebase_auth: 0.16.1
  image_picker: ^0.6.7+17

• Added android:requestLegacyExternalStorage="true" to the AndroidManifest.xml file

• Also Imported import 'package:image_picker/image_picker.dart' to use this library

What could be the problem?

Are you sure the ImagePicker you are using is not the one from this package:chat_app/pickers/image_picker.dart ? Maybe there is a class name conflict and you must rename your own ImagePicker class