How do I override HMENU Special setting based on layout?

Question

I have a menu element that is set to list the selected pages.

tt_content.my_menu {
    dataProcessing {
        10 = TYPO3\CMS\Frontend\DataProcessing\MenuProcessor
        10 {
            special = list
            special.value.field = pages
        }
    }
}

How can I change this to a directory of pages when a specific layout is set?

tt_content.my_menu {
    dataProcessing {
        10 {
            special {
                override = directory
                override.if.value = my-layout
                override.if.equals.field = layout
            }
        }
    }
}

Answer 1

I'm not sure if MenuProcessor? has stdWrap on its properties.

But it should be possible to define two processors, each with an if:

tt_content.my_menu {
    dataProcessing {
        10 = TYPO3\CMS\Frontend\DataProcessing\MenuProcessor
        10 {
            if {
                value = my-layout
                equals.field = layout
                negate = 1
            }
            special = list
            special.value.field = pages
        }
        20 = TYPO3\CMS\Frontend\DataProcessing\MenuProcessor
        20 {
            if {
                value = my-layout
                equals.field = layout
            }
            special = directory
            special.value.field = pages
        }
    }
}