def learning_course_activities_with_externalcourse_activity_id(self,externalcourse_activity_id: str) -> LearningCourseActivitiesWithExternalcourseActivityIdRequestBuilder:
        """
        Provides operations to manage the learningCourseActivities property of the microsoft.graph.employeeExperience entity.
        param externalcourse_activity_id: Alternate key of learningCourseActivity
        Returns: LearningCourseActivitiesWithExternalcourseActivityIdRequestBuilder
        """
        if externalcourse_activity_id is None:
            raise TypeError("externalcourse_activity_id cannot be null.")
        from .learning_course_activities_with_externalcourse_activity_id.learning_course_activities_with_externalcourse_activity_id_request_builder import LearningCourseActivitiesWithExternalcourseActivityIdRequestBuilder

        return LearningCourseActivitiesWithExternalcourseActivityIdRequestBuilder(self.request_adapter, self.path_parameters, externalcourse_activity_id)

        Provides operations to manage the learningCourseActivities property of the microsoft.graph.employeeExperience entity.
        param externalcourse_activity_id: Alternate key of learningCourseActivity
        Returns: LearningCourseActivitiesWithExternalcourseActivityIdRequestBuilder
        
msgraph/generated/employee_experience/employee_experience_request_builder.py