def add_special(self, name):
        self.undeclared.discard(name)
        self.declared.add(name)
Test writing a vml with no cell data.
dataset/ETHPy150Open GeekTrainer/Flask/Work/Trivia - Module 5/env/Lib/site-packages/jinja2/compiler.py/Identifiers.add_special--crossover with--dataset/ETHPy150Open jmcnamara/XlsxWriter/xlsxwriter/test/vml/test_vml01.py/TestAssembleVml.test_assemble_xml_file