code: @Override
      public boolean isEqual(Object o) {
          if (o == this) {
              return true;
          }
          if (!(o instanceof Event)) {
              return false;
          }
  
          Event a = (Event) o;
          return super.isEqual(a);
      }
docs: /*
  (non-Javadoc)
  
  @see
  org.protempa.proposition.TemporalProposition#isEqual(java.lang.Object)