How would I generate PlantUML from an OpenAPI yaml?
You can generate PlantUML from an OpenAPI yaml by using a tool such as https://github.com/plantuml/plantuml-cli or the command line utility https://plantuml.github.io/plantuml-cli/. You can then provide the OpenAPI yaml as an argument to the tool and it will generate the PlantUML diagram.
 To generate PlantUML diagrams from an OpenAPI YAML file, you can follow these general steps:

1. Convert the OpenAPI YAML file to JSON format using a tool like `js-yaml` or an online converter.
2. Parse the JSON output and extract the necessary information such as API endpoints, request/response data structures, and any other relevant details.
3. Use a PlantUML generator library or tool to create the diagrams based on the extracted information.

Here's an example workflow using `js-yaml` and a Node.js script:

1. Install `js-yaml` using npm:

```
npm install js-yaml
```

2. Create a Node.js script called `generate-plantuml.js`:

```javascript
const yaml = require('js-yaml');
const fs = require('fs');
const { PlantUMLServer } = require('node-plantuml-server');

// Read OpenAPI YAML file
const openApiYaml = fs.readFileSync('path/to/your/openapi.yaml', 'utf8');

// Convert YAML to JSON
const openApiJson = yaml.load(openApiYaml);

// Extract necessary information from OpenAPI JSON
const apiEndpoints =