makeBreak(label) {
		const forkContext = this.forkContext;

		if (!forkContext.reachable) {
			return;
		}

		const context = getBreakContext(this, label);

		if (context) {
			context.brokenForkContext.add(forkContext.head);
		}

		/* c8 ignore next */
		forkContext.replaceHead(forkContext.makeUnreachable(-1, -1));
	}
Makes a path for a `break` statement.

It registers the head segment to a context of `break`.
It makes new unreachable segment, then it set the head with the segment.
@param {string|null} label A label of the break statement.
@returns {void}