old_contents: """Extensions builders."""
  
  from flask_caching import Cache
  from flask_sqlalchemy import SQLAlchemy
  from flask_wtf.csrf import CSRFProtect
  from flask import request
  
  
  cache = Cache()
  csrf = CSRFProtect()
  db = SQLAlchemy()  # session_options={"autoflush": False})
  
  
  def make_cache_key(*args, **kwargs):
      path = request.path
      args = str(list(request.args.items()))
      return path + args
  
new_contents: """Extensions builders."""
  
  from flask_caching import Cache
  from flask_sqlalchemy import SQLAlchemy
  from flask_wtf.csrf import CSRFProtect
  from flask import request
  
  
  cache = Cache()
  csrf = CSRFProtect()
  db = SQLAlchemy()  # session_options={"autoflush": False})
  
  
  def make_cache_key(*args, **kwargs):
      """Logic to build redis-cache's key."""
      path = request.path
      args = str(list(request.args.items()))
      return path + args
  
subject: Add docstring.