/**
 * Base class for markup entities and Markup sheets in the Markup API.
 */
export class MarkupEntityBase {
    id;
    properties;
    /**
     * Do not use, use {@link MarkupSheet2D.add} instead.
     * @hidden
     */
    constructor(id, properties = new Map()) {
        this.id = id;
        this.properties = properties;
    }
}
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