FieldType::clearValue: Bitrix method

      
<?php 
//  Bitrix\Bizproc\FieldType :: clearValue()
//  /dist/bitrix/modules/bizproc/lib/fieldtype.php:393

    public function clearValue($value)
    {
        $typeClass = $this->typeClass;

        if ($this->isMultiple())
        {
            $typeClass::clearValueMultiple($this, $value);
        }
        else
        {
            $typeClass::clearValueSingle($this, $value);
        }
    }