jobscheduler/src/main/java/me/tatarka/support/internal/util/ArraySet.java
@Override
    public void clear() {
        if (mSize != 0) {
            freeArrays(mHashes, mArray, mSize);
            mHashes = EmptyArray.INT;
            mArray = EmptyArray.OBJECT;
            mSize = 0;
        }
    }
@Override
    public void clear() {
        if (mSize != 0) {
            freeArrays(mHashes, mArray, mSize);
            mHashes = EmptyArray.INT;
            mArray = EmptyArray.OBJECT;
            mSize = 0;
        }
    }
Make the array map empty. All storage is released.