It is unclear how to go about invoking the implement methods feature. This is do
to the fact that the menu item is labeled only as "Override Methods..." (Tools
-> Override Methods...) and makes no mention that this dialog is also used to
implement methods.

One solution is to change the text to read "Override and Implement Methods..."
which would match the resulting dialog's title. This may not possible due to the
proposed text being too long for the menu. If this is the case, another solution
would be to break out the act of overriding methods and implementing methods
into two different dialogs and thusly, two different menu items.