如何在CKEditor 5经典版中使用url图像插入对话框而不是上传

<div id="editor"></div>

import ClassicEditor from '@ckeditor/ckeditor5-build-classic';
import Image from '@ckeditor/ckeditor5-image/src/image';

ClassicEditor.create( document.querySelector( '#editor' ), {
    plugins: [ Image ],
    toolbar: [ 'imageTextAlternative', '|', 'imageStyle:full', 'imageStyle:side' ],
    image: {
        toolbar: [ 'imageTextAlternative', '|', 'imageStyle:full', 'imageStyle:side' ],
        styles: [
            'full',
            'side'
        ]
    }
} )
    .then( editor => {
        console.log( 'Editor was initialized', editor );
    } )
    .catch( error => {
        console.error( error.stack );
    } );

ClassicEditor.create( document.querySelector( '#editor' ), {
    // ...
    image: {
        toolbar: [ 'imageTextAlternative', '|', 'imageStyle:full', 'imageStyle:side', '|', 'imageInsert', 'imageRemove' ],
        styles: [ 'full', 'side' ],
        customConfig: '',
    }
} )
    .then( editor => {
        editor.plugins.get( 'FileRepository' ).createUploadAdapter = function( loader ) {
            return new MyUploadAdapter( loader );
        };

        console.log( 'Editor was initialized', editor );
    } )
    .catch( error => {
        console.error( error.stack );
    } );

class MyUploadAdapter {
    constructor( loader ) {
        this.loader = loader;
    }

    upload() {
        // 不执行任何上传操作，直接返回一个包含url的Promise对象
        return this.loader.file.then( file => {
            return new Promise( ( resolve, reject ) => {
                const reader = new FileReader();

                reader.onload = () => {
                    resolve( { default: reader.result } );
                };

                reader.onerror = error => {
                    reject( error );
                };

                reader.readAsDataURL( file );
            } );
        } );
    }

    abort() {
        // 不执行任何操作
    }
}