old_contents: # Managing Buttons
  def create_button(page_url, button_template, page_title=None, *args):
      """
      page_url: The URL of the page to be shared.
      
      button_template: By knowing the button_template we know which channel
      is going to be set for that button (email, twitter or facebook).
      
      page_title: It's optional, when 'None' it will be scraped from the 
      page_url automatically.
      
      *args: Received arguments for the variant/s
      we would use the create_variant() function here.
      
      It will return a JSON object with the ID of the button created and
      its information (included the HTML tag for the button to be embedded).
      """
  
  def update_button(id, *args):
      """
      id: button ID.
      
      *args: Received arguments for the variant/s.
      we would use the update_variant() function here.
      """
  
  def delete_button(id):
      # id: button ID.
  
  # Managing variants (different versions for each channels, for A/B tests)
  def create_variant(channel, *args):
      """
      channel: email, twitter or facebook.
      
      *args: Received arguments for the variant.
      """
  
  def update_variant(id, *args):
      """
      id: button ID.
      
      *args: Received arguments for the variant/s.
      """
  
new_contents: # Managing Buttons
  def create_button(page_url, button_template, page_title=None, *args):
      """Arguments received
  
      page_url: The URL of the page to be shared.
      
      button_template: By knowing the button_template we know which channel
      is going to be set for that button (email, twitter or facebook).
      
      page_title: It's optional, when 'None' it will be scraped from the 
      page_url automatically.
      
      *args: Received arguments for the variant/s
      we would use the create_variant() function here.
      
      It will return a JSON object with the ID of the button created and
      its information (included the HTML tag for the button to be embedded).
      """
  
  def update_button(id, *args):
      """Arguments received
  
      id: button ID.
      
      *args: Received arguments for the variant/s.
      we would use the update_variant() function here.
      """
  
  def delete_button(id):
      """id: button ID."""
      pass
  
  # Managing variants (different versions for each channels, for A/B tests)
  def create_variant(channel, *args):
      """Arguments received
  
      channel: email, twitter or facebook.
      
      *args: Received arguments for the variant.
      """
  
  def update_variant(id, *args):
      """Arguments received
  
      id: button ID.
      
      *args: Received arguments for the variant/s.
      """
  
subject: Modify style of Docstrings.