dap4/d4cdm/src/main/java/dap4/cdm/CDMUtil.java
static public boolean
    containsVLEN(List<Dimension> dimset)
    {
        if(dimset == null) return false;
        for(Dimension dim : dimset) {
            if(dim.isVariableLength())
                return true;
        }
        return false;
    }
static public boolean
    containsVLEN(List<Dimension> dimset)
    {
        if(dimset == null) return false;
        for(Dimension dim : dimset) {
            if(dim.isVariableLength())
                return true;
        }
        return false;
    }
Test if any dimension is variable length