package Ġcom . equ isoft . aws mocks . ecs . infrastructure . persistence Ċ Ċ import Ġcom . amazonaws . services . ecs . model . Cluster Ċ import Ġjava . util . concurrent . Concurrent HashMap Ċ import Ġjava . util . concurrent . Concurrent Map Ċ Ċ class ĠCluster Repository Ġ: ĠConcurrent Map < String , ĠCluster > Ġby ĠConcurrent HashMap () Ġ{ ĊĠĠĠ Ġ@ Synchron ized ĊĠĠĠ Ġfun ĠfindBy Arn ( arn : ĠString ): ĠCluster ? Ġ= Ġvalues . find Ġ{ Ġit . cluster Arn Ġ== Ġar n Ġ} Ċ } Ċ