[
  0 => [
    'name' => 'STREAM:STREAM',
    'attrs' => [
      'FROM' => 'gcm.googleapis.com',
      'ID' => '09597D491C3349AA',
      'VERSION' => '1.0',
      'XMLNS:STREAM' => 'http://etherx.jabber.org/streams',
      'XMLNS' => 'jabber:client',
    ],
    'tags' => [
      0 => [
        'name' => 'STREAM:FEATURES',
        'attrs' => [
        ],
        'tags' => [
          0 => [
            'name' => 'MECHANISMS',
            'attrs' => [
              'XMLNS' => 'urn:ietf:params:xml:ns:xmpp-sasl',
            ],
            'tags' => [
              0 => [
                'name' => 'MECHANISM',
                'attrs' => [
                ],
                'tags' => [
                ],
                'data' => 'X-OAUTH2',
              ],
              1 => [
                'name' => 'MECHANISM',
                'attrs' => [
                ],
                'tags' => [
                ],
                'data' => 'X-GOOGLE-TOKEN',
              ],
              2 => [
                'name' => 'MECHANISM',
                'attrs' => [
                ],
                'tags' => [
                ],
                'data' => 'PLAIN',
              ],
            ],
            'data' => '',
          ],
        ],
        'data' => '',
      ],
    ],
    'data' => '',
  ],
]