tds/src/main/java/thredds/server/opendap/NcDDS.java
public DAPNode cloneDAG(CloneMap map)
          throws CloneNotSupportedException {
    NcDDS d = (NcDDS) super.cloneDAG(map);
    d.coordvars = coordvars;
    return d;
  }
public DAPNode cloneDAG(CloneMap map)
          throws CloneNotSupportedException {
    NcDDS d = (NcDDS) super.cloneDAG(map);
    d.coordvars = coordvars;
    return d;
  }
Returns a clone of this <code>?</code>.
See BaseType.cloneDAG()

@param map track previously cloned nodes
@return a clone of this object.