* Add the Truth dependency * Port Junit test to Truth in the package `com.google.gson` of the module `gson` * Replace the `assertThat(e.getMessage()).isEqualTo(...)"` with `assertThat(e).hasMessageThat().isEqualTo(...)` * Minor fixes
* Small tweaks to fix Error Prone warnings. * Add another suppression.
* Add `JsonArray.asList` and `JsonObject.asMap` view methods * Address review comments