359   def set_child( index, tree )  argument
690   def add_child( tree, child )  argument
694   def child_count( tree )  argument
698   def child_index( tree )  argument
702   def child_of( tree, index )  argument
710   def copy_tree( tree, parent = nil )  argument
722   def delete_child( tree, index )  argument
727   def each_child( tree )  argument
735   def each_ancestor( tree, include_tree = true )  argument
744   def flat_list?( tree )  argument
748   def empty?( tree )  argument
752   def parent( tree )  argument
771   def set_child_index( tree, index )  argument
775   def set_parent( tree, parent )  argument
779   def set_token_boundaries( tree, start_token = nil, stop_token = nil )  argument
789   def text_of( tree )  argument
793   def token( tree )  argument
797   def token_start_index( tree )  argument
801   def token_stop_index( tree )  argument
805   def type_name( tree )  argument
809   def type_of( tree )  argument
913   def empty?( tree )  argument
917   def each_child( tree )  argument
1020   def fill_buffer( tree = @root )  argument