These files are containing the class string utils

Artifact actor-runtime
Group im.actor.server
Version 1.0.77
Last update 17. December 2015
Tags: runtime actor
Organization im.actor.server
URL https://actor.im
License Apache v2
Dependencies amount 25
Dependencies scala-library, protobuf-java, scalapb-runtime_2.11, configs_2.11, scala-java8-compat_2.11, logback-classic, scala-logging_2.11, tyrex, kamon-core_2.11, kamon-scala_2.11, kamon-akka_2.11, kamon-system-metrics_2.11, kamon-datadog_2.11, akka-actor_2.11, akka-http-experimental_2.11, akka-stream-experimental_2.11, akka-persistence-jdbc_2.11, caffeine, cats_2.11, concurrentlinkedhashmap-lru, joda-convert, joda-time, libphonenumber, akka-scalapb-serialization_2.11, scalaz-core_2.11,
There are maybe transitive dependencies!