[BLUEJ-1356] Underscore disappears from method name

If a method name contains an _ underscore, and an object instantiating that method is placed on the object bench and right-clicked, the first underscore fails to show up in the method name. A screen shot illustrating the problem is online at [https://drive.google.com/file/d/1eFjxgzQC6YmPu7_5qVP2AwM2om1PWLHx/view?usp=sharing].

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