[word=an] [word=empty] [tag=NN] [word=for] [□]
[word=an] [word=empty] [tag=NN] [word=for] [□=□]
[word=an] [word=empty] [tag=NN] [word=for] [!□]
Children stuff straw in their shoes or an empty box for the three kings ' camels . Particularly useful when the project does not provide a web descriptor ( web.xml ) - in this situation , the generated file will be an empty descriptor for the Servlet API version defined by this property .