Annotation Type FieldMap
A
Map<String, ?> parameter of a @FormUrlEncoded
method adding one form field per entry, for a set of field names not known
until runtime - the @FieldMap counterpart to @QueryMap
and @PartMap. Each entry's value is handled the same way a
@Field value would be: converted with String.valueOf(...)
and percent-encoded, or sent once per element for a Collection
value. A null map or a null entry value is skipped, not an
error. Combines with fixed @Field parameters on the same method;
only valid alongside @FormUrlEncoded.