Add missing import in swagger code gen java file

[Suman Dey]

I have a yaml file for swagger and java code generated from the yaml through maven build.

Now there is issue with nested enum class, @JsonValue & @JsonCreator not imported correctly in the java file after code genration.

Here is my package-import.mustache

{{#imports}}
 import io.swagger.annotations.XXXX.*;
{{/imports}}

Maven build: pom.xml

<execution>
    <id>etim-product-execution</id>
    <goals>
        <goal>generate</goal>
    </goals>
    <configuration>
        <inputSpec>${project.basedir}/src/main/config/etim/Product-Data-v1.1-Specifications.yml</inputSpec>
        <language>jaxrs-spec</language>
        <templateDirectory>${project.basedir}/src/main/resources/custom-template</templateDirectory>
        <configOptions>
            <apiPackage>com.myapp.ssl.service.frontend.product.api</apiPackage>
            <modelPackage>com.myapp.ssl.service.frontend.product.model</modelPackage>
            <interfaceOnly>true</interfaceOnly>
            <returnResponse>true</returnResponse>
            <sourceFolder>java</sourceFolder>
            <generatePom>false</generatePom>
            <java8>true</java8>
        </configOptions>
        <configHelp></configHelp>
    </configuration>
</execution>

I want to add the import line to all java classes which is under that package.

Thanks in advance for the help.