tree fc8e54bf02980573d009180d39d880d80b50b9b8
parent c791662eb2ebf7177be05af1120ee5b414a01fc3
author Patrick Hiesel <hiesel@google.com> 1544025510 +0100
committer Patrick Hiesel <hiesel@google.com> 1544025510 +0100

Use HashMap instead of ImmutableMap.Builder

ImmutableMap.Builder can't deal with duplicates, but a HashMap can.
Using the ref prefix scan can lead to the same refs depending on the
scan patterns that users specify.

Therefore, use HashMap.

Change-Id: I8fa7f326767f9405993a09778d8552282a89c0c6