Wrong error message when declaring a variable named "depends_on"

[Vloeck]

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 2020.1.1 (Ultimate Edition) Build #IU-201.7223.91, built on April 30, 2020 Runtime version: 11.0.6+8-b765.40 amd64 VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o Windows 10 10.0 GC: ParNew, ConcurrentMarkSweep Memory: 1981M Cores: 8 Non-Bundled Plugins: CMD Support, com.intellij.apacheConfig, CheckStyle-IDEA, GrepCode.com Code Search, Lombook Plugin, org.mapstruct.intellij, org.sonarlint.idea, soapUI Plugin, com.intellij.plugins.watcher, org.intellij.plugins.hcl, net.seesharpsoft.intellij.plugins.csv, org.jetbrains.kotlin, com.jetbrains.edu, org.asciidoctor.intellij.asciidoc
• [x] intellij-hcl plugin version (Settings->Plugins) 0.7.9
• [x] Terraform version (terraform -v) Terraform v0.12.26

Expected Behavior

IntelliJ should give a correct error_message like "depends_on is a reserved keyword" like when running terraform

Actual Behavior

What actually happened? IntelliJ gives the following error message:

A name must start with a letter or underscore and may contain only letters, digits, underscores, and dashes.

which is completely wrong since those rules are followed

Steps to Reproduce

define variable block like

variable "depends_on" {
  type = string
}