Program: 74510
Project: 74510
Buggy source:
/** 
 * Set the level above this object in the hierarchy where a parent-child relationship implies the existence of this object. When this object is originally created by a constructor or by the clone method, the level is set to the default Integer.MAX_VALUE, which indicates that the object is not implied. When this is called multiple times, the level will be the minimum of all the levels specified. Thus, a value of 1 indicates that the container of the object is a child, and that this object is implied by a like object in the parent of the container, for example. If an object is implied, then normally has no persistent representation when it is exported to MoML (unless it is overridden), and normally it cannot have its name or container changed.  An exception, however, is that the object may appear in the MoML if the exported MoML does not include the level of the hierarchy above this with the parent-child relationship that implies this object. Calling this method also has the side effect of resetting the flag used to determine whether the value of this object overrides some inherited value. So this method should only be called when object is first being constructed. <p> NOTE: This method is tricky to use correctly. It is public because the MoML parser needs access to it. It should not be considered part of the public interface, however, in that only very sophisticated users should use it.
 * @param level The minimum level above this object in the containmenthierarchy where a parent-child relationship implies this object.
 * @see #getDerivedLevel()
 * @see #setPersistent(boolean)
 * @see Derivable
 */
public final void setDerivedLevel(int level){
  if (level < _derivedLevel) {
    _derivedLevel=level;
  }
}

Fixed version (ground truth):
/** 
 * Set the level above this object in the hierarchy where a parent-child relationship implies the existence of this object. When this object is originally created by a constructor or by the clone method, the level is set to the default Integer.MAX_VALUE, which indicates that the object is not implied. When this is called multiple times, the level will be the minimum of all the levels specified. Thus, a value of 1 indicates that the container of the object is a child, and that this object is implied by a like object in the parent of the container, for example. If an object is implied, then normally has no persistent representation when it is exported to MoML (unless it is overridden), and normally it cannot have its name or container changed.  An exception, however, is that the object may appear in the MoML if the exported MoML does not include the level of the hierarchy above this with the parent-child relationship that implies this object. Calling this method also has the side effect of resetting the flag used to determine whether the value of this object overrides some inherited value. So this method should only be called when object is first being constructed. <p> NOTE: This method is tricky to use correctly. It is public because the MoML parser needs access to it. It should not be considered part of the public interface, however, in that only very sophisticated users should use it.
 * @param level The minimum level above this object in the containmenthierarchy where a parent-child relationship implies this object.
 * @see #getDerivedLevel()
 * @see #setPersistent(boolean)
 * @see Derivable
 */
public final void setDerivedLevel(int level){
  if (level < _derivedLevel) {
    _derivedLevel=level;
  }
  _override=null;
}