old_contents: import logging
  import datetime
  
  DEBUG = True
  
  # Override this key with a secret one
  SECRET_KEY = 'default_secret_key'
  HASHIDS_SALT = 'default_secret_salt'
  
  ## Authentication
  JWT_EXPIRATION_DELTA = datetime.timedelta(days=2)
  JWT_NOT_BEFORE_DELTA = datetime.timedelta(seconds=0)
  
  ## Database
  SQLALCHEMY_DATABASE_URI = None
  SQLALCHEMY_TRACK_MODIFICATIONS = True
  
  ## Logging
  LOG_FILE = 'tissuemaps.log'
  LOG_LEVEL = logging.INFO
  LOG_MAX_BYTES = 2048000  # 2048KB
  LOG_N_BACKUPS = 10
  
  ## Other
  # This should be set to true in the production config when using NGINX
  USE_X_SENDFILE = False
  REDIS_URL = 'redis://localhost:6379'
  
new_contents: import logging
  import datetime
  
  DEBUG = True
  
  # Override this key with a secret one
  SECRET_KEY = 'default_secret_key'
  HASHIDS_SALT = 'default_secret_salt'
  
  ## Authentication
  JWT_EXPIRATION_DELTA = datetime.timedelta(days=2)
  JWT_NOT_BEFORE_DELTA = datetime.timedelta(seconds=0)
  
  ## Database
  SQLALCHEMY_DATABASE_URI = None
  SQLALCHEMY_TRACK_MODIFICATIONS = True
  
  ## Logging
  LOG_FILE = 'tissuemaps.log'
  LOG_LEVEL = logging.INFO
  LOG_MAX_BYTES = 2048000  # 2048KB
  LOG_N_BACKUPS = 10
  
  ## Other
  # This should be set to true in the production config when using NGINX
  USE_X_SENDFILE = False
  REDIS_URL = 'redis://localhost:6379'
  
  ## Spark
  USE_SPARK = False
  SPARK_APP_NAME = 'tmaps'
  SPARK_MASTER_URL = 'local'
  SPARK_DB_URL = 'postgresql://localhost:5432/tissuemaps'
  
subject: Add spark-related settings to defaultconfig