def _Exists(self):
    show_cmd = [AZURE_PATH,
                'network',
                'vnet',
                'show',
                '--json',
                self.name]
    stdout, _, _ = vm_util.IssueCommand(show_cmd, suppress_warning=True)
    vnet = json.loads(stdout)
    if vnet:
      return True
    return False
Returns true if the virtual network exists.
dataset/ETHPy150Open GoogleCloudPlatform/PerfKitBenchmarker/perfkitbenchmarker/providers/azure/azure_network.py/AzureVirtualNetwork._Exists