code: def get_course_runs_from_program(program):
      
      course_runs = set()
      for course in program.get("courses", []):
          for run in course.get("course_runs", []):
              if "key" in run and run["key"]:
                  course_runs.add(run["key"])
  
      return course_runs
docs: Return course runs from program data.
  
      Arguments:
          program(dict): Program data from Course Catalog API
  
      Returns:
          set: course runs in given program