processNode(e, t, r) {
    const i = e.$container;
    if (i) {
      const s = this.nameProvider.getName(e);
      s && r.add(i, this.descriptions.createDescription(e, s, t));
    }
  }
Process a single node during scopes computation. The default implementation makes the node visible
in the subtree of its container (if the node has a name). Override this method to change this,
e.g. by increasing the visibility to a higher level in the AST.