code: public function getAttribute($name)
      {
          return isset($this->_attributes[$name]) ? $this->_attributes[$name] : null;
      }
docs: Returns the named attribute value.
  If this record is the result of a query and the attribute is not loaded,
  `null` will be returned.
  @param string $name the attribute name
  @return mixed the attribute value. `null` if the attribute is not set or does not exist.
  @see hasAttribute()