optaplanner-examples/src/main/java/org/optaplanner/examples/common/swingui/timetable/TimeTablePanel.java
public void addCornerHeader(HeaderColumnKey xObject, HeaderRowKey yObject, JComponent component) {
        int x = xMap.get(xObject);
        int y = yMap.get(yObject);
        add(component, new TimeTableLayoutConstraints(x, y, true));
    }
public void addCornerHeader(HeaderColumnKey xObject, HeaderRowKey yObject, JComponent component) {
        int x = xMap.get(xObject);
        int y = yMap.get(yObject);
        add(component, new TimeTableLayoutConstraints(x, y, true));
    }
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