myfaces-html5-core/src/main/java/org/apache/myfaces/html5/behavior/DragSourceBehavior.java [104:162]:
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    public void setValueExpression(String name, ValueExpression item)
    {
        if (item == null)
        {
            getValueExpressionMap().remove(name);
            deltaStateHelper.remove(name);
        }
        else
        {
            getValueExpressionMap().put(name, item);
        }
    }

    private Map<String, ValueExpression> getValueExpressionMap()
    {
        return _valueExpressions;
    }

    public ValueExpression getValueExpression(String name)
    {
        return getValueExpressionMap().get(name);
    }

    @Override
    public void restoreState(FacesContext facesContext, Object o)
    {
        if (o == null)
        {
            return;
        }
        Object[] values = (Object[]) o;
        if (values[0] != null)
        {
            super.restoreState(facesContext, values[0]);
        }
        deltaStateHelper.restoreState(facesContext, values[1]);
    }

    @Override
    public Object saveState(FacesContext facesContext)
    {
        if (initialStateMarked())
        {
            Object parentSaved = super.saveState(facesContext);
            Object deltaStateHelperSaved = deltaStateHelper.saveState(facesContext);

            if (parentSaved == null && deltaStateHelperSaved == null)
            {
                //No values
                return null;
            }
            return new Object[]{parentSaved, deltaStateHelperSaved};
        }
        else
        {
            Object[] values = new Object[2];
            values[0] = super.saveState(facesContext);
            values[1] = deltaStateHelper.saveState(facesContext);
            return values;
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myfaces-html5-core/src/main/java/org/apache/myfaces/html5/behavior/DropTargetBehavior.java [135:193]:
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    public void setValueExpression(String name, ValueExpression item)
    {
        if (item == null)
        {
            getValueExpressionMap().remove(name);
            deltaStateHelper.remove(name);
        }
        else
        {
            getValueExpressionMap().put(name, item);
        }
    }

    private Map<String, ValueExpression> getValueExpressionMap()
    {
        return _valueExpressions;
    }
    
    public ValueExpression getValueExpression(String name) 
    {
        return getValueExpressionMap().get(name);
    }
    
    @Override
    public void restoreState(FacesContext facesContext, Object o)
    {
        if (o == null)
        {
            return;
        }
        Object[] values = (Object[]) o;
        if (values[0] != null) 
        {
            super.restoreState(facesContext, values[0]);
        }
        deltaStateHelper.restoreState(facesContext, values[1]);
    }

    @Override
    public Object saveState(FacesContext facesContext)
    {
        if (initialStateMarked())
        {
            Object parentSaved = super.saveState(facesContext);
            Object deltaStateHelperSaved = deltaStateHelper.saveState(facesContext);
            
            if (parentSaved == null && deltaStateHelperSaved == null)
            {
                //No values
                return null;
            }   
            return new Object[]{parentSaved, deltaStateHelperSaved};
        }
        else
        {
            Object[] values = new Object[2];
            values[0] = super.saveState(facesContext);
            values[1] = deltaStateHelper.saveState(facesContext);
            return values;
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