<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_exceptions(self):
 """ a tuple of class names for the exception types this method may raise, or None if this is not a method reference: http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.7.5 """
  # noqa

        buff = self.get_attribute("Exceptions")
        if buff is None:
            return ()

        with unpack(buff) as up:
            return tuple(self.deref_const(e[0]) for e
                         in up.unpack_struct_array(_H))