def __init__(self, alias, target, hstore_key):
super().__init__(alias, target, output_field=target)<EOL>self.alias, self.target, self.hstore_key = alias, target, hstore_key<EOL>
Initializes a new instance of :see:HStoreColumn.

        Arguments:
            alias:
                The table name.

            target:
                The field instance.

            hstore_key
                The name of the hstore key to include
                in the epxression.