Not able to retrieve user-name from frame returned by connection callback function

[psggit]

**_Expected Change:

this.client.connect(this.props.headers, (frame) => {
console.log("frame", frame)
this.setState({ connected: true })
this.props.topics.forEach((topic) => {
this._subscribe(topic)
})
this.props.onConnect(frame)
}, (error) => {
if (error) {
if (Object.keys(this.props).includes('onConnectFailure')) {
this.props.onConnectFailure(error)
} else {
this._log(error.stack)
}
}
if (this.state.connected) {
this._cleanUp()
// onDisconnect should be called only once per connect
this.props.onDisconnect()
}
if (this.props.autoReconnect && !this.state.explicitDisconnect) {
this._timeoutId = setTimeout(this.connect, this.props.getRetryInterval(this.retryCount++))
}
})**