public final boolean isMissingValue(Object value){
  if (value instanceof Integer) {
    Integer ivalue=(Integer)value;
    return ivalue == MISSING_VALUE;
  }
 else   if (value instanceof String) {
    return MISSING_VALUE_STRING.equals(value);
  }
  return false;
}

public final boolean isMissingValue ( Object value ) { if ( value instanceof Integer ) { Integer ivalue = ( Integer ) value ; return ivalue == MISSING_VALUE ; } else if ( value instanceof String ) { return MISSING_VALUE_STRING . equals ( value ) ; } return false ; }
determines whether the given value is the missing value marker .
