old_contents: '''
  Copyright 2012 Upverter Inc.
  
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
  
     http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  '''
  
  class Error(Exception):
      pass
  
  
  class ConfigurationException(Error):
      pass
  
  
  class ValidationException(Error):
      pass
  
  class RedirectionException(Error):
      pass
  
  class InvalidRequestException(Error):
      pass
  
  class UnAuthorizedException(Error):
      pass
  
  class BusinessRuleException(Error):
      pass
  
  class ForbiddenException(Error):
      pass
  
  class InvalidRequestException(Error):
      pass
   
  class InternalServerException(Error):
     pass
  
  
  
new_contents: '''
  Copyright 2012 Upverter Inc.
  
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
  
     http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  '''
  
  class Error(Exception):
      pass
  
  
  class ConfigurationException(Error):
      pass
  
  
  class ValidationException(Error):
      pass
  
  # define a superclass BeanStreamApiException
  # Author: Haggai Liu
  
  
  
  
  
  class RedirectionException(Error):
      pass
  
  class InvalidRequestException(Error):
      pass
  
  class UnAuthorizedException(Error):
      pass
  
  class BusinessRuleException(Error):
      pass
  
  class ForbiddenException(Error):
      pass
  
  class InvalidRequestException(Error):
      pass
   
  class InternalServerException(Error):
     pass
  
  
  
subject: Update errors.py