isExportedOutport(port, nodeName, portName) {
    if (!this.network) {
      return false;
    }
    // First we check disambiguated exported ports
    const keys = Object.keys(this.network.graph.outports);
    for (let i = 0; i < keys.length; i += 1) {
      const pub = keys[i];
      const priv = this.network.graph.outports[pub];
      if (priv.process === nodeName && priv.port === portName) {
        return pub;
      }
    }

    // Component has exported ports and this isn't one of them
    return false;
  }
@param {import("../lib/OutPort").default} port
@param {string} nodeName
@param {string} portName
@returns {boolean|string}