QML listview how to set space between header and first item

[astoffregen]

I use the header property in the listview element.
How can I get a space between the header and the first list entry?
The space between the list entries works, but not the space between the header and the first line.

This is my listview code

ListView { Layout.fillWidth: true;  Layout.fillHeight: true
    model: user.model
    currentIndex: 1
    onCurrentIndexChanged: { console.log("currentIndex changed") }
    header: UserItemDelegate { p_index: -1; p_name: "Benutzeranmeldung"; p_icon: "password"; p_isHeader: true }
    delegate: UserItemDelegate { p_index: index; p_name: name; p_icon: icon; p_isHeader: false }
    spacing: 20
}

UserItemDelegate looks like this but that may not be important to my question

Item {
    id: root
    height: configuration.getSize(Sizes.ListItemHeight)
    width: parent.width
    property int p_index
    property string p_name
    property string p_icon
    property bool p_isHeader
    property bool p_isSelected: root.ListView.view.currentIndex == p_index
    property string p_color: configuration.getColor(p_isHeader ? Colors.ListItemDisabled : (p_isSelected ? Colors.ListItemSelected : Colors.ListItemDefault)) 
    
    Rectangle { anchors.fill: parent; Layout.fillWidth: true; Layout.fillHeight: true; color: p_color
        RowLayout { anchors.verticalCenter: parent.verticalCenter; 
            Image { Layout.leftMargin: 10; sourceSize.height: root.height * 0.6; source: "image://iconprovider/" + p_icon }
            Label { Layout.leftMargin: 10; text: p_name }
        }
        MouseArea{ enabled: !p_isHeader; anchors.fill: parent; onClicked: { root.ListView.view.currentIndex = p_index; } } 
    }
}

[johngod]

Use a different delegate for the header with the height of the UserItemDelegate + the space. You dont need to duplicate the code for the two delegates, just create a Item for the header delegate with the user delegate inside.