def METHOD_NAME(self):
    # Check some objects that do not support MutableSequence
    non_samples = [
        java.util.HashMap(),
        java.util.HashSet(),
        java.util.TreeSet(),
        java.util.concurrent.ConcurrentSkipListMap(),
    ]
    for x in non_samples:
        self.assertNotIsInstance(x, MutableSequence)
        self.assertFalse(issubclass(type(x), MutableSequence), repr(type(x)))
    # Check some mappables
    samples = [
        java.util.ArrayList(),
        java.util.LinkedList(),
        java.util.HashMap().keys(),
    ]
    for x in samples:
        self.assertIsInstance(x, MutableSequence)
        self.assertTrue(issubclass(type(x), MutableSequence), repr(type(x)))