GSON反序列化/序列化具有未确定密钥名称的json字符串

I have JSON like this:

我有这样的JSON:

#   "trig_cond": {
#       "_and": {
#               "param1": ["op", "value1"],
#               "param2": ["op", "value2"], ...
#       },
#       "_or": {
#               "param1": ["op", "value1"],
#               "param2": ["op", "value2"], ...
#       }
#    }
#   "trig