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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 load_case(self, testcase):
 """Load a TestSuite containing all TestCase instances for all tests in a TestCase subclass. Parameters testcase : type A subclass of :class:`unittest.TestCase` """

        tests = [self.load_test(testcase, name)
                 for name in self.find_test_method_names(testcase)]
        return self.create_suite(tests)