public List<Expression> getExpressionsCanPushDown() {
      return this.expressionsCanPushDown;
    }
Evaluates an expression's response to binding the specified input symbols to NULL
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/optimizations/PushPredicateIntoTableScan.java