user/test/com/google/gwt/resources/client/gss/cssWithConstant.gss

@def CONSTANT_ONE 15px;
@def CONSTANT_TWO 5px;
@def CONSTANT_THREE black;
@def CONFLICT_CONSTANT_CLASS white;

.className1 {
    padding-right: CONSTANT_ONE;
    padding-left: CONSTANT_TWO;
    color: CONSTANT_THREE;
}

.conflictConstantClass{
    color: CONFLICT_CONSTANT_CLASS;
}