Multiple attributes for google_compute_ha_vpn_gateway marked as "unresolved reference"

[metroshica]

Prerequisites

• [x] Ensure you have latest version of plugin installed
• [x] Search for possible issue duplicates

Installation details

• [x] IDE version (Help->About->Copy to Clipboard)

  
  PyCharm 2019.3.1 (Community Edition)
  Build #PC-193.5662.61, built on December 18, 2019
  Runtime version: 11.0.5+10-b520.17 x86_64
  VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
  macOS 10.14.6
  GC: ParNew, ConcurrentMarkSweep
  Memory: 1981M
  Cores: 8
  Registry: 
  Non-Bundled Plugins: aws.toolkit, org.intellij.plugins.hcl

 - [x] intellij-hcl plugin version (`Settings->Plugins`)

0.7.7

 - [x] Terraform version (`terraform -v`)

0.12.20

### Terraform Configuration Files
```hcl
provider "google-beta" {
  version     = "~> 3.5.0"
}

resource "google_compute_ha_vpn_gateway" "ha-vpn1" {
  provider = google-beta
  name     = "ha-vpn1"
  network  = var.gcp_network_name
}

Exception

For exceptions paste exception stack trace here. If it's huge one - use gist.

Expected Behavior

No warnings should appear.

Actual Behavior

vpn_interfaces highlighted red with the message: Unresolved reference vpn_interfaces List of attributes affected:

• description
• project
• region
• self_link
• vpn_interfaces

Steps to Reproduce

Please list the steps required to reproduce the issue, for example:

1. Copy and paste Terraform configuration file above to see highlighted attribute.
2. Replace highlighted attribute with attributes from list.

[VladRassokhin]

There's no 'vpn_interfaces' in sample code, though I'm sure issue is resolved by updating terraform metadata in 0.7.8