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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_message(self, *parameters):
 """Get encoded message. * Send Message -keywords are convenience methods, that will call this to get the message object and then send it. Optional parameters are message field values separated with colon. Examples: | ${msg} = | Get message | | ${msg} = | Get message | field_name:value | """

        _, message_fields, header_fields = self._get_parameters_with_defaults(parameters)
        return self._encode_message(message_fields, header_fields)