cme.setColor(sb.colorExpression(Color.YELLOW));
cme.setLabel("thelabel");
cme.setQuantity(sb.literalExpression(66.66));
cme.setOpacity(sb.literalExpression(0.77));
cme.accept(visitor);
ColorMapEntry cme2 = (ColorMapEntry) visitor.getCopy();
assertEquals("Colormaps LABEL must be equal after duplication ", cme.getLabel(), cme2
.getLabel());