def source(self, format='<STR_LIT>', accessible=False):
if accessible:<EOL><INDENT>return self.http.get('<STR_LIT>').value<EOL><DEDENT>return self.http.get('<STR_LIT>'+format).value<EOL>
Args:
    format (str): only 'xml' and 'json' source types are supported
    accessible (bool): when set to true, format is always 'json'