code: def show_subnetwork(kwargs=None, call=None):
      '''
      ... versionadded:: 2017.7.0
      Show details of an existing GCE Subnetwork. Must specify name and region.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt-cloud -f show_subnetwork gce name=mysubnet region=us-west1
  
      '''
      if call != 'function':
          raise SaltCloudSystemExit(
              'The show_subnetwork function must be called with -f or --function.'
          )
  
      if not kwargs or 'name' not in kwargs:
          log.error(
              'Must specify name of subnet.'
          )
          return False
  
      if 'region' not in kwargs:
          log.error(
              'Must specify region of subnet.'
          )
          return False
  
      name = kwargs['name']
      region = kwargs['region']
      conn = get_conn()
      return _expand_item(conn.ex_get_subnetwork(name, region)f show_subnetwork(kwargs=None, call=None):
      '''
      ... versionadded:: 2017.7.0
      Show details of an existing GCE Subnetwork. Must specify name and region.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt-cloud -f show_subnetwork gce name=mysubnet region=us-west1
  
      '''
      if call != 'function':
          raise SaltCloudSystemExit(
              'The show_subnetwork function must be called with -f or --function.'
          )
  
      if not kwargs or 'name' not in kwargs:
          log.error(
              'Must specify name of subnet.'
          )
          return False
  
      if 'region' not in kwargs:
          log.error(
              'Must specify region of subnet.'
          )
          return False
  
      name = kwargs['name']
      region = kwargs['region']
      conn = get_conn()
      return _expand_item(conn.ex_get_subnetwork(name, region))
docs: ... versionadded:: 2017.7.0
      Show details of an existing GCE Subnetwork. Must specify name and region.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt-cloud -f show_subnetwork gce name=mysubnet region=us-west1