@Override
  public List<TaskExecution> getExecution() {
    List<TaskExecution> list = getList(DSL.EXECUTION, TaskExecution.class);
    return list!=null?list:Collections.emptyList();
  }
An implementation of the {@link Job} interface
based on {@link MapObject}.

@author Arik Cohen
src/main/java/com/creactiviti/piper/core/job/SimpleJob.java