[JAVA] Bug code generation cannot deal with quotes in @ApiModelProperty

Description

The result model of my API is annotated with @ApiModelProperty. At some locations I provide example values for the Swagger documentation, for instance:

  @ApiModelProperty(value = "A list with correction suggestions", example = "[\"misspelled\", \"suggested\"]")
  public Collection<String> getSuggestions() {

The Java code generation fails due to the escaped quotation marks in the example attribute. It generates:

  @ApiModelProperty(example = ""[\"misspelled\", \"suggested\"]"", value = "A list with correction suggestions")
  public List<String> getSuggestions() {

Swagger declaration file content or url

The input specification looks like that:

 ...
        "suggestions" : {
          "type" : "array",
          "example" : "[\"misspelled\", \"suggested\"]",
          "description" : "A list with correction suggestions",
          "items" : {
            "type" : "string"
          }

Swagger-codegen version

I use io.swagger:swagger-codegen-maven-plugin:2.2.2. I cannot take a newer version because I don't use Maven 3.

Command line used for generation

I configured the plugin as follows:

        <plugin>
          <groupId>io.swagger</groupId>
          <artifactId>swagger-codegen-maven-plugin</artifactId>
          ...
          <executions>
            <execution>
              <phase>generate-sources</phase>
              <goals>
                <goal>generate</goal>
              </goals>
              <configuration>
                <addCompileSourceRoot>false</addCompileSourceRoot>
                <output>${project.build.directory}/swagger</output>
                <inputSpec>swagger.json</inputSpec>
                <inputSpec>${project.build.directory}/swagger/${project.groupId}.json</inputSpec>
                <language>java</language>
                <apiPackage>${project.artifactId}.api</apiPackage>
                <modelPackage>${project.artifactId}.model</modelPackage>
                <invokerPackage>${project.artifactId}.invoker</invokerPackage>
                <generateApis>true</generateApis>
                <generateApiTests>true</generateApiTests>
                <generateApiDocumentation>true</generateApiDocumentation>
                <generateModels>true</generateModels>
                <generateModelTests>true</generateModelTests>
                <generateModelDocumentation>true</generateModelDocumentation>
                <generateSupportingFiles>false</generateSupportingFiles>
                <library>jersey2</library>
              </configuration>
            ...

Start by reproducing the failure with the provided Swagger declaration and the Java generator configuration using swagger-codegen-maven-plugin 2.2.2. Trace the Java model generation and @ApiModelProperty rendering; done means escaped quotation marks in the example remain valid Java annotation content rather than becoming HTML entities, with coverage for this input.