method EventEmitter.prototype._addListenerimport { EventEmitter } from "https://deno.land/x/aleph@v0.3.0-beta.12/framework/core/events.ts"; _addListener(eventName: string | symbol,listener: GenericFunction | WrappedFunction,prepend: boolean,): thisParameterseventName: string | symbollistener: GenericFunction | WrappedFunctionprepend: booleanReturnsthis