<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_raw(self):
 """ Return the raw buffer of this object :rtype: bytearray """

        buff = bytearray()
        for i in self.get_instructions():
            buff += i.get_raw()
        return buff