@Override
 public boolean equals(Object obj) {
   if (this == obj) return true;
   if (obj == null) return false;
   if (getClass() != obj.getClass()) return false;
   CoverageDimensionImpl other = (CoverageDimensionImpl) obj;
   if (description == null) {
     if (other.description != null) return false;
   } else if (!description.equals(other.description)) return false;
   if (dimensionType == null) {
     if (other.dimensionType != null) return false;
   } else if (!dimensionType.equals(other.dimensionType)) return false;
   if (id == null) {
     if (other.id != null) return false;
   } else if (!id.equals(other.id)) return false;
   if (name == null) {
     if (other.name != null) return false;
   } else if (!name.equals(other.name)) return false;
   if (nullValues == null) {
     if (other.nullValues != null) return false;
   } else if (!nullValues.equals(other.nullValues)) return false;
   if (range == null) {
     if (other.range != null) return false;
   } else if (!range.equals(other.range)) return false;
   if (unit == null) {
     if (other.unit != null) return false;
   } else if (!unit.equals(other.unit)) return false;
   return true;
 }
 @Override
 public int hashCode() {
   final int prime = 31;
   int result = 1;
   result = prime * result + ((description == null) ? 0 : description.hashCode());
   result = prime * result + ((dimensionType == null) ? 0 : dimensionType.hashCode());
   result = prime * result + ((id == null) ? 0 : id.hashCode());
   result = prime * result + ((name == null) ? 0 : name.hashCode());
   result = prime * result + ((nullValues == null) ? 0 : nullValues.hashCode());
   result = prime * result + ((range == null) ? 0 : range.hashCode());
   result = prime * result + ((unit == null) ? 0 : unit.hashCode());
   return result;
 }