default boolean isSpecialCompletableKeyCode(@Nullable KeyCode code) {
		return false;
	}
Called when the {@link CompletionPopupUpdater} observes a typed non-letter/non-digit {@link KeyCode}.
<p/>
Implementations can check for key-codes not covered by {@link KeyCode#isLetterKey()} and {@link KeyCode#isDigitKey()}
to support completion of additional characters. For example the {@code []} characters are not covered by default
and an implementation would need to explicitly support them via this method.

@param code Key-code to check for tab-completion support.
@return {@code true} when this completer supports the tab-completion of the given key-code.
recaf-ui/src/main/java/software/coley/recaf/ui/control/richtext/suggest/TabCompleter.java