How to use the cloudinary-core.Cloudinary.DEFAULT_VIDEO_PARAMS function in cloudinary-core

      default: () => Cloudinary.DEFAULT_VIDEO_PARAMS.source_types.reduce((currSrc, type) => ({ ...currSrc, [type]: {} }), {})
    }

render() {
    let {publicId, poster, sourceTypes, fallback, sourceTransformation: sourceTransformations, innerRef, ...options} = Object.assign({},
      this.getContext(),
      this.props);
    sourceTransformations = sourceTransformations || {};
    sourceTypes = sourceTypes || Cloudinary.DEFAULT_VIDEO_PARAMS.source_types;
    options = CloudinaryComponent.normalizeOptions(options, {});
    let cld = Cloudinary.new(Util.withSnakeCaseKeys(options));
    let sources = [];
    let tagAttributes = Transformation.new(options).toHtmlAttributes();
    let childTransformations = this.getTransformation(options);
    if (Util.isPlainObject(poster)) {
      let defaults = poster.publicId !== undefined && poster.publicId !== null ? Cloudinary.DEFAULT_IMAGE_PARAMS : DEFAULT_POSTER_OPTIONS;
      poster = cld.url(poster.publicId || publicId, Util.defaults({}, Util.withSnakeCaseKeys(poster), defaults));
    }
    if (!Util.isEmpty(poster)) {
      tagAttributes.poster = poster;
    }
    if (!Util.isEmpty(this.state.poster)) {
      tagAttributes.poster = this.state.poster;
    }