rome
     </a>
     . The value of pd_entity is interpreted as a field to the PixieApp class, e.g.,
     <code>
      <span>
       pd_entity="filteredDataFrame"
      </span>
     </code>
     , and requires that the PixieApp instance has a field named filteredDataFrame. If the field is not present, then an error will be raised.
    </p>
    <div>
     <p>
      Note
     </p>
     <p>
      the entity passed by the caller in the run method is stored in a special field called
      <code>
       pixieapp_e