<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def create(self, asset_versions=values.unset, function_versions=values.unset, dependencies=values.unset):
 """ Create a new BuildInstance :param unicode asset_versions: The asset_versions :param unicode function_versions: The function_versions :param unicode dependencies: The dependencies :returns: Newly created BuildInstance :rtype: twilio.rest.serverless.v1.service.build.BuildInstance """

        data = values.of({
            'AssetVersions': serialize.map(asset_versions, lambda e: e),
            'FunctionVersions': serialize.map(function_versions, lambda e: e),
            'Dependencies': dependencies,
        })

        payload = self._version.create(
            'POST',
            self._uri,
            data=data,
        )

        return BuildInstance(self._version, payload, service_sid=self._solution['service_sid'], )