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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_names(self):
 """Get the names of the objects to include in the table. :returns: The names of the objects to include. :rtype: generator(str) """

        for line in self.content:
            line = line.strip()
            if line and re.search("^[a-zA-Z0-9]", line):
                yield line