@loopback/docs/site/apidocs/openapi-spec-builder.builderbase._spec.md

Documentation for LoopBack 4

---
lang: en
title: 'API docs: openapi-spec-builder.builderbase._spec'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.openapi-spec-builder.builderbase._spec.html
---

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[Home](./index.md) &gt; [@loopback/openapi-spec-builder](./openapi-spec-builder.md) &gt; [BuilderBase](./openapi-spec-builder.builderbase.md) &gt; [\_spec](./openapi-spec-builder.builderbase._spec.md)

## BuilderBase.\_spec property

<b>Signature:</b>

```typescript
protected _spec: T;
```