121 - (id) copyTree:(id)aTree  argument
127 - (void) addChild:(id)child toTree:(id)aTree  argument
132 - (id) makeNode:(id)newRoot parentOf:(id)oldRoot  argument
134 	id newRootNode = newRoot;  argument
165 	id processedNode = aTree;  argument
182 - (NSInteger) tokenTypeForNode:(id)aNode  argument
187 - (void) setTokenType:(NSInteger)tokenType forNode:(id)aNode  argument
193 - (NSString *) textForNode:(id)aNode  argument
198 - (void) setText:(NSString *)tokenText forNode:(id)aNode  argument
206 - (id) childForNode:(id) aNode atIndex:(NSInteger) i  argument
212 - (NSInteger) childCountForTree:(id) aTree  argument
220 - (void) setBoundariesForTree:(id)aTree fromToken:(id<Token>)startToken toToken:(id<Token>)stopToken  argument
225 - (NSInteger) tokenStartIndexForTree:(id)aTree  argument
231 - (NSInteger) tokenStopIndexForTree:(id)aTree  argument
232 {