code: private FilterClause populateFilterClause(ComparisonExpression conditionalExpression)
      {
          String property = ((StateFieldPathExpression) conditionalExpression.getLeftExpression()).getPath(1);
          String condition = conditionalExpression.getComparisonOperator();
          Expression rightExpression = conditionalExpression.getRightExpression();
          Object value = (rightExpression instanceof InputParameter) ? kunderaQuery.getParametersMap().get(
                  (rightExpression).toParsedText()) : rightExpression.toParsedText();
  
          return (condition != null && property != null) ? kunderaQuery.new FilterClause(property, condition, value, property)
                  : null;
      }
docs: Populate filter clause.
  
  @param conditionalExpression
  the conditional expression
  @return the filter clause