Is there reason why there is no emptyReader?

[eugkhp]

I was wondering why there is default emptyWriter implementation https://github.com/tethys-json/tethys/blob/3ffbdb4cf27595580041a01f4b1e1bd98cb486f2/modules/core/src/main/scala/tethys/writers/EmptyWriters.scala and there is no emptyReader. For example:
i would like to serialize something like this:
case class Person[A](id: Int, names: List[A])
well, for encoding i can just write:
implicit val PersonEmptyWriter: JsonObjectWriter[Person[String]] = EmptyWriters.emptyWriter
but i can't do the same for decode something like this:
{id: 1, names: []}
so i have to write empty implementation of reader which is basiclly just signature of method.
Are there any reasons for not creating "EmptyReaders.emptyReader"?