How to use the @jsii/spec.SchemaVersion function in @jsii/spec

if (this._diagnostics.find(diag => diag.category === ts.DiagnosticCategory.Error) != null) {
      LOG.debug('Skipping emit due to errors.');
      // Clearing ``this._types`` to allow contents to be garbage-collected.
      delete this._types;
      try {
        return { diagnostics: this._diagnostics, emitSkipped: true };
      } finally {
        // Clearing ``this._diagnostics`` to allow contents to be garbage-collected.
        delete this._diagnostics;
      }
    }

    const jsiiVersion = this.projectInfo.jsiiVersionFormat === 'short' ? SHORT_VERSION : VERSION;

    const assembly: spec.Assembly = {
      schema: spec.SchemaVersion.LATEST,
      name: this.projectInfo.name,
      version: this.projectInfo.version,
      description: this.projectInfo.description || this.projectInfo.name,
      license: this.projectInfo.license,
      keywords: this.projectInfo.keywords,
      homepage: this.projectInfo.homepage || this.projectInfo.repository.url,
      author: this.projectInfo.author,
      contributors: this.projectInfo.contributors && [...this.projectInfo.contributors],
      repository: this.projectInfo.repository,
      dependencies: noEmptyDict({ ...this.projectInfo.dependencies, ...this.projectInfo.peerDependencies }),
      dependencyClosure: noEmptyDict(toDependencyClosure(this.projectInfo.dependencyClosure)),
      bundled: this.projectInfo.bundleDependencies,
      types: this._types,
      targets: this.projectInfo.targets,
      metadata: this.projectInfo.metadata,
      docs,