in elitzur-avro/src/main/scala/com/spotify/elitzur/converters/avro/dynamic/dsl/AvroObjMapper.scala [83:92]
private def pathToTokens(path: String): AvroFieldTokens = {
val idx = path.indexOf('.')
val (field, rest) = if (idx > 0) {
(path.substring(0, idx), Some(path.substring(idx + 1)))
} else {
(path, None)
}
AvroFieldTokens(field, rest)
}