Emit mouse signals on parent item

[sz]

Hi all.
I want to encapsulate a MouseArea with an item that adds some additional logic and, expose the same signals (with the same parameters).
I tried to expose the "pressed" and "released" signals as follows (with a parameter of MouseEvent type, as the original signals):

import QtQuick 2.0
 
Item {
    signal pressed(MouseEvent mouse)
    signal released(MouseEvent mouse)
 
    MouseArea
    {
        anchors.fill: parent
 
        onPressed: parent.pressed(mouse)
        onReleased: parent.released(mouse)
    }
}

import QtQuick 2.0

Item {
    signal pressed(MouseEvent mouse)
    signal released(MouseEvent mouse)

    MouseArea
    {
        anchors.fill: parent

        onPressed: parent.pressed(mouse)
        onReleased: parent.released(mouse)
    }
}

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But, it seems like it doesn't recognize the MouseEvent type.
What do I do wrong? Is there a way to declare variables with the MouseEvent type?