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public boolean equals (Object arg) {   
  if (! (arg instanceof Range)) return false;   
  Range other = (Range) arg;   
  return start.equals(other.start) && end.equals(other.end);   
}  
public boolean equals (Object arg) {
if (! (arg instanceof Range)) return false;
Range other = (Range) arg;
return start.equals(other.start) && end.equals(other.end);
}
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public boolean equals (Object aOther) {   
  if (! (aOther instanceof Range)) return false;   
  Range other = (Range) aOther;   


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