Unresolved Reference: execution_arn from aws_api_gateway_rest_api data

Thank you for opening an issue. In this template paragraph text could be removed, however please retain headers.

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)

IntelliJ IDEA 2019.2.3 (Ultimate Edition)
Build #IU-192.6817.14, built on September 23, 2019
Licensed to Expedia, Inc. / Billy Bautista
You have a perpetual fallback license for this version
Subscription is active until May 1, 2021
Runtime version: 11.0.4+10-b304.69 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
macOS 10.13.6
GC: ParNew, ConcurrentMarkSweep
Memory: 1981M
Cores: 8
Registry: debugger.watches.in.variables=false
Non-Bundled Plugins: IdeaVIM, claims.bold.intellij.avro, org.intellij.clojure, org.intellij.plugins.hcl, Karma, org.jetbrains.kotlin, com.intellij.plugins.html.instantEditing, org.intellij.scala, JSTestDriver Plugin, Pythonid, org.jetbrains.plugins.ruby

[X] intellij-hcl plugin version (Settings->Plugins)
```
0.7.7
```
[X] Terraform version (terraform -v)
```
0.12.13
```

Terraform Configuration Files

data "aws_api_gateway_rest_api" "api" {
  name = var.api_name
}

data "aws_lambda_function" "lambda" {
  function_name = var.lambda_name
}

resource "aws_lambda_permission" "lambda_permission" {
  statement_id = "AllowInvocationFromAPIGateway"
  action = "lambda:InvokeFunction"
  function_name = data.aws_lambda_function.lambda.function_name
  principal = "apigateway.amazonaws.com"

  source_arn = data.aws_api_gateway_rest_api.api.execution_arn
}

Exception

N/A

Expected Behavior

No warnings/errors manifest.

Actual Behavior

IDE claims "Unresolved reference execution_arn"

Steps to Reproduce

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

Use an aws_api_gateway_rest_api data element
Reference execution_arn from the aws_api_gateway_rest_api data element in a resource element
Observe error/warning

VladRassokhin / intellij-hcl

Unresolved Reference: execution_arn from aws_api_gateway_rest_api data #292