如何通过vue-axios获取Vue实例

Question

我使用Vuetify和vue-axios创建一个项目，并创建一个简单的登录组件，但是我有问题要获取Vue实例

这是我的登录组件：

  <template>
      <v-app id="inspire">
        <v-content>
          <v-container fluid fill-height>
            <v-layout align-center justify-center>
              <v-flex xs12 sm8 md4>
                <v-card class="elevation-12">
                  <v-toolbar dark color="primary">
                   ...
                  </v-toolbar>
                  <v-card-text>
                    ...
                  </v-card-text>
                  <v-card-actions>
                    <v-spacer></v-spacer>
                    <v-btn color="primary" @click='logar()'>Entrar</v-btn>
                  </v-card-actions>
                </v-card>
              </v-flex>
            </v-layout>
          </v-container>
        </v-content>
      </v-app>
    </template>
    <script>
    export default {
      name: 'Login',
      data: () => ({
        drawer: null,
        checkbox: false,
        username: 'cartorio@teste.com.br',
        password: '1234',
      }),
      props: {
        source: String,
      },
      methods: {    
        logar() {   
          var myVue = this.$vuetify;
          this.axios.post('http://localhost:8585/login', {
            email: this.username,
            senha: this.password,
          },
          {
            withCredentials: false,
            headers: {
              Accept: 'application/json',
              'Content-Type': 'application/json',
            },
          },
          ).then((response) => {
//HERE I NEED TO USE myVue
            window.AUT = response.headers.authorization;
          }).catch((error) => {
            console.log(error);
          });
        },
      },
    };
    </script>

所以，在axios promisse中，那么我需要使用我的var myVue，那么为什么总是得到未定义？

tks