json - How to map JSONArray to Model using MJExtension -

i got jsonobject this:

{     "id":123,     "coordinate": [         116.414503,         39.945575     ], }

i have defined coordinate model:

//coordinate.h   @property (nonatomic, assign) float lng;  @property (nonatomic, assign) float lat;

and target model:

//target.h @property (nonatomic, assign) int id;  @property (nonatomic, strong) coordinate *coordinate;

question how corresponding target class?

thanks!

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