Using the "create test" code lens
Using Symflower's code lens lets you add new test templates with a single click to jumpstart your test writing. The "create test" code lens is enabled by default. Just navigate above the method you want to add a test template for and click "create test". You'll see the corresponding test template being added to your test file.
Here's how Symflower's "create test" code lens works, demonstrated in IntelliJ IDEA: