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//! The visualize module provides the `Visualize` trait. /// The `Visualize` trait abstracts the visual presentation of the node's data. /// It should be implemented by the Tree<T>'s node type T. /// Only mandatory to implement is the `visualize` method. pub trait Visualize { /// Returns the string representation of the nodes data. fn visualize(&self) -> String; /// When this method returns true the drawer can emphasize the node's string representation /// in an implementation dependent way, i.e. it can print it bold. fn emphasize(&self) -> bool { false } }