def update_blast(blast_id, name = nil, list = nil, schedule_time = nil, from_name = nil, from_email = nil, subject = nil, content_html = nil, content_text = nil, options = {})
      data = options ? options : {}
      data[:blast_id] = blast_id
      if name != nil
        data[:name] = name
      end
      if list !=  nil
        data[:list] = list
      end
      if schedule_time != nil
        data[:schedule_time] = schedule_time
      end
      if from_name != nil
        data[:from_name] = from_name
      end
      if from_email != nil
        data[:from_email] = from_email
      end
      if subject != nil
        data[:subject] = subject
      end
      if content_html != nil
        data[:content_html] = content_html
      end
      if content_text != nil
        data[:content_text] = content_text
      end
      api_post(:blast, data)
    end
def update_blast(blast_id, name = nil, list = nil, schedule_time = nil, from_name = nil, from_email = nil, subject = nil, content_html = nil, content_text = nil, options = {})
      data = options ? options : {}
      data[:blast_id] = blast_id
      if name != nil
        data[:name] = name
      end
      if list !=  nil
        data[:list] = list
      end
      if schedule_time != nil
        data[:schedule_time] = schedule_time
      end
      if from_name != nil
        data[:from_name] = from_name
      end
      if from_email != nil
        data[:from_email] = from_email
      end
      if subject != nil
        data[:subject] = subject
      end
      if content_html != nil
        data[:content_html] = content_html
      end
      if content_text != nil
        data[:content_text] = content_text
      end
      api_post(:blast, data)
    end
params
   blast_id, Fixnum | String
   name, String
   list, String
   schedule_time, String
   from_name, String
   from_email, String
   subject, String
   content_html, String
   content_text, String
   options, hash

 updates existing blast