def genitems(self, colitems):
session = colitems[<NUM_LIT:0>].session<EOL>result = []<EOL>for colitem in colitems:<EOL><INDENT>result.extend(session.genitems(colitem))<EOL><DEDENT>return result<EOL>
Generate all test items from a collection node.

        This recurses into the collection node and returns a list of all the
        test items contained within.