jsii does not recognize an IDependable implementation written in Python

[patelhpr]

Describe the bug

I am trying to create a python implementation of this function mentioned here in cdk. (https://github.com/aws/aws-cdk/blob/main/packages/aws-cdk-lib/aws-ec2/lib/vpc.ts#L2293)

@jsii.implements(IDependable)
class CompositeDependable:
    def __init__(self):
        super().__init__()
        self.dependables = []

    @property
    def dependency_roots(self) -> List[IDependable]:
        ret: IDependable = []
        for dep in self.dependables:
            if isinstance(dep, IDependable):
                ret.extend(dep.dependency_roots)
            else:
                raise TypeError("All dependables must implement IDependable")
        return ret

    def add(self, dep: IDependable) -> None:
        self.dependables.append(dep)

When I run cdk synth I get this error

jsii.errors.JavaScriptError: 
  @jsii/kernel.RuntimeError: Error: [object Object] does not implement IDependable. Use "Dependable.implement()" to implement
      at Kernel._Kernel_ensureSync (/private/var/folders/dj/6xj1cj8d7vngc7vs39vg5xn40000gr/T/tmp8uxt9v8p/lib/program.js:10487:23)
      at Kernel.invoke (/private/var/folders/dj/6xj1cj8d7vngc7vs39vg5xn40000gr/T/tmp8uxt9v8p/lib/program.js:9851:102)
      at KernelHost.processRequest (/private/var/folders/dj/6xj1cj8d7vngc7vs39vg5xn40000gr/T/tmp8uxt9v8p/lib/program.js:11691:36)
      at KernelHost.run (/private/var/folders/dj/6xj1cj8d7vngc7vs39vg5xn40000gr/T/tmp8uxt9v8p/lib/program.js:11651:22)
      at Immediate._onImmediate (/private/var/folders/dj/6xj1cj8d7vngc7vs39vg5xn40000gr/T/tmp8uxt9v8p/lib/program.js:11652:46)
      at process.processImmediate (node:internal/timers:476:21)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Users/patelhpr/.pyenv/versions/3.10.9/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/Users/patelhpr/.pyenv/versions/3.10.9/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/Volumes/workplace/Connected-mobility-solution-on-aws/source/modules/acdp/backstage/cdk/source/app.py", line 55, in <module>
    app.synth()
  File "/Volumes/workplace/Connected-mobility-solution-on-aws/source/modules/acdp/backstage/cdk/.venv/lib/python3.10/site-packages/aws_cdk/__init__.py", line 21164, in synth
    return typing.cast(_CloudAssembly_c693643e, jsii.invoke(self, "synth", [options]))
  File "/Volumes/workplace/Connected-mobility-solution-on-aws/source/modules/acdp/backstage/cdk/.venv/lib/python3.10/site-packages/jsii/_kernel/__init__.py", line 149, in wrapped
    return _recursize_dereference(kernel, fn(kernel, *args, **kwargs))
  File "/Volumes/workplace/Connected-mobility-solution-on-aws/source/modules/acdp/backstage/cdk/.venv/lib/python3.10/site-packages/jsii/_kernel/__init__.py", line 407, in invoke
    return _callback_till_result(self, response, InvokeResponse)
  File "/Volumes/workplace/Connected-mobility-solution-on-aws/source/modules/acdp/backstage/cdk/.venv/lib/python3.10/site-packages/jsii/_kernel/__init__.py", line 267, in _callback_till_result
    response = kernel.sync_complete(response.cbid, None, result, response_type)
  File "/Volumes/workplace/Connected-mobility-solution-on-aws/source/modules/acdp/backstage/cdk/.venv/lib/python3.10/site-packages/jsii/_kernel/__init__.py", line 445, in sync_complete
    return self.provider.sync_complete(
  File "/Volumes/workplace/Connected-mobility-solution-on-aws/source/modules/acdp/backstage/cdk/.venv/lib/python3.10/site-packages/jsii/_kernel/providers/process.py", line 403, in sync_complete
    resp = self._process.send(_CompleteRequest(complete=request), response_type)
  File "/Volumes/workplace/Connected-mobility-solution-on-aws/source/modules/acdp/backstage/cdk/.venv/lib/python3.10/site-packages/jsii/_kernel/providers/process.py", line 342, in send
    raise RuntimeError(resp.error) from JavaScriptError(resp.stack)
RuntimeError: Error: [object Object] does not implement IDependable. Use "Dependable.implement()" to implement

Expected Behavior

jsii should recognize this as a valid IDependable implementation

Current Behavior

jsii does not recognize it as an IDependable and throws an error

Reproduction Steps

Use the code given above in a cdk stack and run cdk synth.

Possible Solution

No response

Additional Information/Context

No response

SDK version used

cdk version 2.115.0

Environment details (OS name and version, etc.)

MacOS 14.2.1