Strange exception when creating own shorthand descriptors

[nhubbard]

Hello again!

I've been trying to make a shorthand descriptor for the flex property, but no matter how I order the properties, I can't get CSSPropertyWithDefaultValue to stop throwing an exception about not using a CSSPropertyFree expect for the last element.

My shorthand descriptor looks like this (again, I apologize, it is written in Kotlin instead of Java). I attempted to order the properties per the MDN entry on the flex property.

class FlexShorthand : CSSShortHandDescriptor(
    ECSSProperty.FLEX,
    CSSPropertyWithDefaultValue(
        CCSSProperties.FLEX_GROW,
        "0"
    ),
    CSSPropertyWithDefaultValue(
        CCSSProperties.FLEX_BASIS,
        CCSSValue.PERC100
    ),
    CSSPropertyWithDefaultValue(
        CCSSProperties.FLEX_SHRINK,
        "0"
    )
)

Is there a specific way I should order it to make it work as expected? Or is this kind of shorthand descriptor impossible?

The exception text looks like this:

The SubProperty [CSSPropertyWithDefaultValue@0x603e25c5: property=[CSSPropertyFree@0x60fce0ca: prop=FLEX_GROW]; defaultValue=0] may not use an unspecified CSSPropertyFree except for the last element!
java.lang.IllegalArgumentException: The SubProperty [CSSPropertyWithDefaultValue@0x603e25c5: property=[CSSPropertyFree@0x60fce0ca: prop=FLEX_GROW]; defaultValue=0] may not use an unspecified CSSPropertyFree except for the last element!
	at com.helger.css.decl.shorthand.CSSShortHandDescriptor.<init>(CSSShortHandDescriptor.java:64)
	at com.github.nhubbard.autoclave.shorthands.FlexShorthand.<init>(FlexShorthand.kt:9)
	at com.github.nhubbard.autoclave.shorthands.FlexShorthandTest.flexShorthandTest(FlexShorthandTest.kt:50)

[phax]

@nhubbard there is nothing you can do at the moment - the key issue here is, that the properties are itself not properly typed.
So effectively flex-grow, flex-shrink and flex-basis are "free text" properties....
I am fixing this for 6.4.0 release

[phax]

Fixed in 6.4.0