'Created a Decoder for a MaxMind DB
Arguments:
database_buffer -- an mmap\'d MaxMind DB file.
pointer_base -- the base number to use when decoding a pointer
pointer_test -- used for internal unit testing of pointer code'

def __init__(self, database_buffer, pointer_base=0, pointer_test=False):

    self._pointer_test = pointer_test
    self._buffer = database_buffer
    self._pointer_base = pointer_base
