openapi and the javax.annotation.*

Question

You can use this dependency for the @Nullable Annotations

<dependency>
    <groupId>net.sourceforge.findbugs</groupId>
    <artifactId>jsr305</artifactId>
    <version>1.3.7</version>
</dependency>

Or you use the lib from google (see below or here):

<dependency>
    <groupId>com.google.code.findbugs</groupId>
    <artifactId>jsr305</artifactId>
    <version>3.0.2</version>
</dependency>