Convert takes an object and converts it to a url.Values object using JSON tags as parameter names.

ErrConvertMapStringSlice can not covert to map[string][]string.

ErrConvertToMapString can not convert to map[string]string.

Marshaler converts an object to a query parameter string representation.

Setter tries to set value on a walking by fields of a struct.

Unmarshaler converts a string representation to an object.