src/Metable/Attribute.php
protected function setType($value)
    {
        $this->attributes['meta_type'] = $this->hasMutator($value, 'setter')
            ? $this->getMutatedType($value, 'setter')
            : $this->getValueType($value);
    }
protected function setType($value)
    {
        $this->attributes['meta_type'] = $this->hasMutator($value, 'setter')
            ? $this->getMutatedType($value, 'setter')
            : $this->getValueType($value);
    }
Set type of the meta attribute.

@param mixed $value