How to use the sbp.utils.exclude_fields function in sbp

def to_json_dict(self):
    self.to_binary()
    d = super( MsgPosECEFGnss, self).to_json_dict()
    j = walk_json_dict(exclude_fields(self))
    d.update(j)
    return d

def to_binary(self):
    """Produce a framed/packed SBP message.

    """
    c = containerize(exclude_fields(self))
    self.payload = MsgAlmanacGloDep._parser.build(c)
    return self.pack()

def to_binary(self):
    """Produce a framed/packed SBP message.

    """
    c = containerize(exclude_fields(self))
    self.payload = MsgAlmanacGPS._parser.build(c)
    return self.pack()

def to_binary(self):
    """Produce a framed/packed SBP message.

    """
    c = containerize(exclude_fields(self))
    self.payload = MsgDopsDepA._parser.build(c)
    return self.pack()

def into_buffer(self, buf, offset):
    """Produce a framed/packed SBP message into the provided buffer and offset.

    """
    self.payload = containerize(exclude_fields(self))
    self.parser = MsgGPSTime._parser
    self.stream_payload.reset(buf, offset)
    return self.pack_into(buf, offset, self._build_payload)

def to_binary(self):
    """Produce a framed/packed SBP message.

    """
    c = containerize(exclude_fields(self))
    self.payload = MsgThreadState._parser.build(c)
    return self.pack()

def to_binary(self):
    """Produce a framed/packed SBP message.

    """
    c = containerize(exclude_fields(self))
    self.payload = MsgEphemerisGPS._parser.build(c)
    return self.pack()

def to_binary(self):
    """Produce a framed/packed SBP message.

    """
    c = containerize(exclude_fields(self))
    self.payload = MsgEphemerisGloDepA._parser.build(c)
    return self.pack()

def into_buffer(self, buf, offset):
    """Produce a framed/packed SBP message into the provided buffer and offset.

    """
    self.payload = containerize(exclude_fields(self))
    self.parser = MsgTrackingState._parser
    self.stream_payload.reset(buf, offset)
    return self.pack_into(buf, offset, self._build_payload)

def to_json_dict(self):
    self.to_binary()
    d = super( MsgAcqResult, self).to_json_dict()
    j = walk_json_dict(exclude_fields(self))
    d.update(j)
    return d