grib/src/main/java/ucar/nc2/grib/coord/VertCoordValue.java
public boolean nearlyEquals(VertCoordValue other) {
    return Misc.nearlyEquals(value1, other.value1) && Misc.nearlyEquals(value2, other.value2);
  }
public boolean nearlyEquals(VertCoordValue other) {
    return Misc.nearlyEquals(value1, other.value1) && Misc.nearlyEquals(value2, other.value2);
  }
cannot do approx equals and be consistent with hashCode, so make seperate call