ipyvuetify DatePicker and allowedDates

I m struggling with the datePicker widget, I have a list of dates in python and I would like to display the widget with only theses dates, but how I m supposed to provide that array with ipyvuetify ?

This work fine, but it only hides odd days.

class DatesPicker(v.VuetifyTemplate):

date = traitlets.Unicode(default_value= '2020-01-01').tag(sync=True)
#allowedDatesArray = traitlets.List(default_value= ["2020-01-01","2020-01-02", "2020-01-05","2020-01-06"]).tag(sync=True)

traitlets.default('template')
def _template(self):
    '''<template>
<v-row justify="center">
<v-date-picker
  v-model="date"
  :allowed-dates="allowedDates"
  class="mt-4"
  min="2016-06-15"
  max="2020-01-15"
></v-date-picker>
</v-row>
</template>

<script >
export default {
data: () => ({
}),

methods: {
  allowedDates: val => parseInt(val.split('-')[2], 10) % 2 === 0,
},
}
</script>

'''
So how can I pass "allowedDatesArray" to methods, or is there an other way to deal with allowedDates based on an array ? (With trailets only ?)

Start with the DatesPicker example in the issue, including the allowedDatesArray traitlet, the VuetifyTemplate _template, and the allowedDates method. Check how values synchronized from Python can be accessed by the template method. Done means the date picker accepts the Python date list and permits only those dates.