code: def plot(self, entity):
          
          df = self._binary_df[[entity]]
          resampled = df.resample("s").ffill()  # Sample at seconds and ffill
          resampled.columns = ["value"]
          fig, ax = plt.subplots(1, 1, figsize=(16, 2))
          ax.fill_between(resampled.index, y1=0, y2=1, facecolor="royalblue", label="off")
          ax.fill_between(
              resampled.index,
              y1=0,
              y2=1,
              where=(resampled["value"] > 0),
              facecolor="red",
              label="on",
          )
          ax.set_title(entity)
          ax.set_xlabel("Date")
          ax.set_frame_on(False)
          ax.set_yticks([])
          plt.legend(loc=(1.01, 0.7))
          plt.show()
          return
docs: Basic plot of a single binary sensor data.
  
          Parameters
          ----------
          entity : string
              The entity to plot