$20180123 constant
        
        WebhookEndpointApiVersion
        const $20180123
        
      
      
2018-01-23
Implementation
static const WebhookEndpointApiVersion $20180123 =
    WebhookEndpointApiVersion('2018-01-23');
2018-01-23
static const WebhookEndpointApiVersion $20180123 =
    WebhookEndpointApiVersion('2018-01-23');