[REQ] Is there a way to generate multiple specs in one project?

Is your feature request related to a problem? Please describe.

I want to generate multiple clients, and I am doing so with multiple tasks:

task javaOne(type: org.openapitools.generator.gradle.plugin.tasks.GenerateTask) {
    generatorName = "java"
    inputSpec = "https://example.com/api1"
    outputDir = "$buildDir/java/ApiOne"
    configOptions = [hideGenerationTimestamp: true]
}

task javaTwo(type: org.openapitools.generator.gradle.plugin.tasks.GenerateTask) {
    generatorName = "java"
    inputSpec = "https://example.com/api2"
    outputDir = "$buildDir/java/ApiTwo"
    configOptions = [hideGenerationTimestamp: true]
}

The problem is that this creates two seperate build packages (build/java/ApiOne and build/java/ApiTwo), which have lots of redundant stuff.

Describe the solution you'd like

I'm wondering if I could somehow compile clients for multiple specs in a single file, something like:

task javaAthlete(type: org.openapitools.generator.gradle.plugin.tasks.GenerateTask) {
    generatorName = "java"
    inputSpecs = [
        "https://example.com/api2",
        "https://example.com/api1",
    ]
    outputDir = "$buildDir/java/Api"
    configOptions = [hideGenerationTimestamp: true]
}

resulting in a single build/java/Api directory. I see a similar topic discussed for swagger-codegen at the following url, but see no discussion/documentation about something similar with openapi-generator: https://stackoverflow.com/questions/41702500/generate-code-for-multiple-swaggers-in-the-same-project

Describe alternatives you've considered

Additional context

Start with the Gradle plugin's org.openapitools.generator.gradle.plugin.tasks.GenerateTask and review how inputSpec and outputDir are handled for separate tasks. Done means establishing whether multiple OpenAPI specs can produce one Java client package in a single output directory, with the required configuration and behavior documented or tested.