method Decorator.prototype.insertTypeArgumentimport { Decorator } from "https://dotland.deno.dev/x/ts_morph@22.0.0/mod.ts"; insertTypeArgument(index: number, argumentText: string): TypeNode<ts.TypeNode>Inserts a type argument. Inserts a type argument. Parametersindex: number Child index to insert at. argumentText: string Argument text. ReturnsTypeNode<ts.TypeNode>