public int getUnreachableCount() {
      return unreachable_.size();
    }
<pre>
Unreachable resources.
</pre>

<code>repeated string unreachable = 3;</code>

@return The count of unreachable.
java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/ListUsableWorkstationsResponse.java