def create(attributes)
      response = JSON.parse(@client.post('fees', attributes).body)
      Promisepay::Fee.new(@client, response['fees'])
    end
def create(attributes)
      response = JSON.parse(@client.post('fees', attributes).body)
      Promisepay::Fee.new(@client, response['fees'])
    end
Create a fee for a marketplace

 @see https://reference.promisepay.com/#create-fee

 @param attributes [Hash] Item's attributes.

 @return [Promisepay::Item]