method JSDocOptionalType.prototype.getTypeNodeimport { JSDocOptionalType } from "https://dotland.deno.dev/x/ts_morph@22.0.0/ts_morph.d.ts"; getTypeNode(): TypeNode<ts.TypeNode>Gets the type node of the JS doc optional type node. Gets the type node of the JS doc optional type node. ReturnsTypeNode<ts.TypeNode>