The time.Time type is converted to empty map

type Person struct { Name string json:"name" Age int json:"age" Time time.Time json:"time" Address Address json:"address" }

Why a time.Time type has to be converted to map, not recursive transfer is not on the line, configuration is not, read a lot of posts, what hook, hook function is not good. I recommend using the github.com/fatih/structs library, I really buy it