@Override
	public CharStream getInputStream() {
		return source.b;
	}
Explicitly set the text for this token. If {code text} is not
{@code null}, then {@link #getText} will return this value rather than
extracting the text from the input.

@param text The explicit text of the token, or {@code null} if the text
should be obtained from the input along with the start and stop indexes
of the token.
runtime/Java/src/org/antlr/v4/runtime/CommonToken.java