def get_urls(self):
        """
        Content of field ``856u42``. Typically URL pointing to producers
        homepage.

        Returns:
            list: List of URLs defined by producer.
        """
        urls = self.get_subfields("856", "u", i1="4", i2="2")

        return map(lambda x: x.replace("&amp;", "&"), urls)
def get_urls(self):
        
        urls = self.get_subfields("856", "u", i1="4", i2="2")

        return map(lambda x: x.replace("&amp;", "&"), urls)
def get_urls ( self ) : urls = self . get_subfields ( "856" , "u" , i1 = "4" , i2 = "2" ) return map ( lambda x : x . replace ( "&amp;" , "&" ) , urls )
Content of field ``856u42``. Typically URL pointing to producers
        homepage.

        Returns:
            list: List of URLs defined by producer.
Content of field 856u42 . Typically URL pointing to producers homepage .