@Override
	public int getStateType() {
		return PLUS_BLOCK_START;
	}
Start of {@code (A|B|...)+} loop. Technically a decision state, but
 we don't use for code generation; somebody might need it, so I'm defining
 it for completeness. In reality, the {@link PlusLoopbackState} node is the
 real decision-making note for {@code A+}.
runtime/Java/src/org/antlr/v4/runtime/atn/PlusBlockStartState.java