'Override to return compression options for the connection.
If this method returns None (the default), compression will
be disabled.  If it returns a dict (even an empty one), it
will be enabled.  The contents of the dict may be used to
control the following compression options:
``compression_level`` specifies the compression level.
``mem_level`` specifies the amount of memory used for the internal compression state.
These parameters are documented in details here:
https://docs.python.org/3.6/library/zlib.html#zlib.compressobj
.. versionadded:: 4.1
.. versionchanged:: 4.5
Added ``compression_level`` and ``mem_level``.'

def get_compression_options(self):

    return None
