[Bug] Smart usage does not include all optional command nodes

[NeunEinser]

Because of the lack of documentation, I have no idea if this is by design or not.
Consider following example:

dispatcher.register(literal("foo")
    .executes(ctx -> 0)
    .then(literal("bar")
        .executes(ctx -> 1)
        .then(literal("baz")
            .executes( ctx -> 2)
        )
    )
);

for (String usage : dispatcher.getAllUsage(dispatcher.getRoot(), null, false)) {
    System.out.println(usage);
}

dispatcher.getSmartUsage(dispatcher.getRoot(), null).forEach((k, v) -> System.out.println(k + ": " + v));

The expected output is:

foo
foo bar
foo bar baz
<literal foo>: foo [bar] [baz]

The actual output is:

foo
foo bar
foo bar baz
<literal foo>: foo [bar]

Note, that the smart usage is missing the optional baz argument at the end.

The command dispatcher actually does have a javadoc, however for smart usage it only says "These forms may be mixed and matched to provide as much information about the child nodes as it can, without being too verbose". (These forms is referring to literal, <arg>, [opt] and (either|or)).
It's unclear how "providing as much information as it can without being too verbose" is actually meant.

Imo there is no reason not to provide this information. It's also confusing since the user probably does not expect any further possible arguments after bar.

[SoniEx2]

wouldn't that be foo [bar [baz]]?