MasterPress 1.3.1 is a compatibility release for PHP 8 and WordPress 5.7. It still remains backwards compatible with older PHP versions.
MPFT_RelatedTaxonomy :: count()
Return the count of taxonomies selected in the UI. Since this overrides count the number of taxonomies can also be retrieved by calling count directly on the field object.
Note: This method is intended for internal use and should not be called directly.