Wrong signature documentation for `get_attribute()`

[spaceone]

The docs on OneLogin_Saml2_Auth.get_attribute() say that it returns a string, while it actually returns a list

 |  get_attribute(self, name)
 |      Returns the requested SAML attribute.
 |      
 |      :param name: Name of the attribute
 |      :type name: string
 |      
 |      :returns: Attribute value if exists or None
 |      :rtype: string

(Pdb) response.get_attribute('urn:oid:0.9.2342.19200300.100.1.1')
['Administrator']