This is the backing field for {@link #getTokenSource} and
{@link #getInputStream}.
<p>
These properties share a field to reduce the memory footprint of
{@link CommonToken}. Tokens created by a {@link CommonTokenFactory} from
the same source and input stream share a reference to the same
{@link Pair} containing these values.</p>
This is the backing field for {@link #getTokenSource} and {@link #getInputStream}.
<p> These properties share a field to reduce the memory footprint of {@link CommonToken}. Tokens created by a {@link CommonTokenFactory} from the same source and input stream share a reference to the same {@link Pair} containing these values.</p>