src/Models/ElementModel.php
protected function normalizePropertyFormat()
    {
        if (empty($this->fields['PROPERTIES'])) {
            return;
        }

        foreach ($this->fields['PROPERTIES'] as $code => $prop) {
            $this->fields['PROPERTY_'.$code.'_VALUE'] = $prop['VALUE'];
            $this->fields['~PROPERTY_'.$code.'_VALUE'] = $prop['~VALUE'];
            $this->fields['PROPERTY_'.$code.'_DESCRIPTION'] = $prop['DESCRIPTION'];
            $this->fields['~PROPERTY_'.$code.'_DESCRIPTION'] = $prop['~DESCRIPTION'];
            $this->fields['PROPERTY_'.$code.'_VALUE_ID'] = $prop['PROPERTY_VALUE_ID'];
        }
    }
protected function normalizePropertyFormat()
    {
        if (empty($this->fields['PROPERTIES'])) {
            return;
        }

        foreach ($this->fields['PROPERTIES'] as $code => $prop) {
            $this->fields['PROPERTY_'.$code.'_VALUE'] = $prop['VALUE'];
            $this->fields['~PROPERTY_'.$code.'_VALUE'] = $prop['~VALUE'];
            $this->fields['PROPERTY_'.$code.'_DESCRIPTION'] = $prop['DESCRIPTION'];
            $this->fields['~PROPERTY_'.$code.'_DESCRIPTION'] = $prop['~DESCRIPTION'];
            $this->fields['PROPERTY_'.$code.'_VALUE_ID'] = $prop['PROPERTY_VALUE_ID'];
        }
    }
Normalize properties's format converting it to 'PROPERTY_"CODE"_VALUE'.

@return null