golang: Find key in interface (recursively) and return value as interface

interfaceKeySearch.go

// Find key in interface (recursively) and return value as interface
func Find(obj interface{}, key string) (interface{}, bool) {
   
	//if the argument is not a map, ignore it
    mobj, ok := obj.(map[string]interface{})
    if !ok {
        return nil, false
    }

    for k, v := range mobj {
        // key match, return value
        if k == key {
            return v, true
        }

        // if the value is a map, search recursively
        if m, ok := v.(map[string]interface{}); ok {
            if res, ok := Find(m, key); ok {
                return res, true
            }
        }
        // if the value is an array, search recursively 
        // from each element
        if va, ok := v.([]interface{}); ok {
            for _, a := range va {
                if res, ok := Find(a, key); ok {
                    return res,true
                }
            }
        }
    }

    // element not found
    return nil,false
}