@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((body == null) ? 0 : body.hashCode());
result = prime * result + ((document == null) ? 0 : document.hashCode());
result = prime * result + ((enclosingType == null) ? 0 : enclosingType.hashCode());
result = prime * result + ((unit == null) ? 0 : unit.hashCode());
return result;
}
