Java Only Array
Java ArrayList backed implementation of ReadableArray and WritableArray Instances of this class SHOULD NOT be used for communication between java and JS, use instances of WritableNativeArray created via Arguments#createArray or just ReadableArray interface if you want your "native" module method to take an array from JS as an argument.
Main purpose for this class is to be used in java-only unit tests, but could also be used outside of tests in the code that operates only in java and needs to communicate with RN modules via their JS-exposed API.