Java classes are not generated

I have `.proto` files inside `proto/` directory of Android project. The proto files are from a git sub module and the sub module under `src/main/proto`. There are some other dirs inside the sub module and imports are used in proto files.
Example of an import from a proto file is like: `import "code/device/protofiles/v1/status.proto";`

I've set the proto srcDirs path to custom path in gradle. and it look like:
`main {
proto {
srcDirs = ['src/main/proto/device/proto']
}
}`

upon setting custom srcDir path it resolves the imports in proto files but Java classes are not getting generated inside `build/generated/source` dir.
When I remove the custom `srcDirs` from gradle and change all imports to
`import "device/proto/code/device/protofiles/v1/status.proto";` instead of `import "code/device/protofiles/v1/status.proto";`
the java classes gets generated.
But I want not to change the imports as these protofiles are inside a submodule and is used in othe projects as well.

Issue: Java classes are not generating from protofiles upon custom srcDirs path for protofiles

Start with the custom Gradle proto.srcDirs configuration and the proto/ layout described in the issue, including the submodule and imported status.proto path. Reproduce generation with the original imports, then inspect the plugin's handling of custom source roots; done means Java classes appear under build/generated/source without changing those imports.

Written by the indexing model from the issue text.