docstr: A proxy-call to the dataframe's `.query()`.
code: def query(self, expr):
      """
      A proxy-call to the dataframe's `.query()`.
      """
      return self.dataframe.query(expr=expr)
  
imports: from abc import ABC
label_desc: Use image node_id 52 for calling the DataframeAbstract obj's underlying member method code with example usage: obj.query(expr) and returns: self