[JAVA] Not possible to disable builder pattern in models

Description

When we generate the Java client of the defined API, the model comes with a builder pattern that makes no possible to access attributes on Freemarker without using the full getter method name. It forces us to use ${item.getId()} instead of ${item.id} or change the generated code, which is not an option in a project where the model must be generated many times.

Swagger-codegen version

2.3.1

Command line used for generation

Maven plugin configuration:

<plugin>
                <groupId>io.swagger</groupId>
                <artifactId>swagger-codegen-maven-plugin</artifactId>
                <version>2.3.1</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                        <configuration>
                            <inputSpec>${project.basedir}/docs/api.yaml</inputSpec>
                            <language>java</language>
                            <configOptions>
                                <sourceFolder>src/gen/java/main</sourceFolder>
                                <dateLibrary>legacy</dateLibrary>
                            </configOptions>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

Suggest a fix/enhancement

A configuration option to disable builder generation

Start by tracing the Java model generation path used by the swagger-codegen Maven plugin and reviewing how generator configuration options reach the model templates. Confirm how builder methods are currently emitted and identify the existing generation tests. Done means a configuration option can disable builders while preserving the default behavior and is covered by generation tests.