Wrong error message is dumped

In my QML app, I used:

import Ubuntu.Components 1.1

and

                    UbuntuShape {
                        height: parent.width
                        width: height
                        image: Image {
                            id: image
                            source: preview
                            height: parent.width
                            width: height
                            sourceSize.height: height
                            sourceSize.width: width
                            fillMode: Image.PreserveAspectFit
                            smooth: true
                        }
                        Image {
                            id: selectionTick
                            anchors.right: parent.right
                            anchors.top: parent.top
                            width: units.gu(5)
                            height: units.gu(5)
                            visible: curItem.selected && root.pickMode
                            source: "photo-preview-selected-overlay.png"
                        }

                    }

When I tried to run my app, it complained:

file:///opt/click.ubuntu.com/contenthub-exporter.liu-xiao-guo/0.1/Main.qml:276:21: QML UbuntuShape: 'image' is deprecated. Use 'source' instead.

In fact, "image" property exists in Ubuntu.Components 1.1, and it does not exist in Ubuntu.Components 1.2. If I use "source" instead of "image", I have to change to use Ubuntu.Components 1.2. Otherwise, there I cannot run my app since "source" does not exist in the Ubuntu.Components 1.1 at all.

We need to dump the correct warning message according to the Ubuntu.Components version. Otherwise, a developer changes the code, but it may not run in the previous version of the phones. In some case, it just simply causes some confusion.

Best regards,
XiaoGuo