cdm/src/main/java/ucar/ma2/StructureMembers.java
public int hideMember(Member m) {
    if (m == null) return -1;
    int index = members.indexOf(m);
    members.remove(m);
    if (memberHash != null) memberHash.remove(m.getName());
    return index;
  }
public int hideMember(Member m) {
    if (m == null) return -1;
    int index = members.indexOf(m);
    members.remove(m);
    if (memberHash != null) memberHash.remove(m.getName());
    return index;
  }
Remove the given member
@param m member
@return position that it used to occupy, or -1 if not found