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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 load_template(self, name, *parameters):
 """Load a message template saved with `Save template`. Optional parameters are default values for message header separated with colon. Examples: | Load Template | MyMessage | header_field:value | """

        template, fields, header_fields = self._set_templates_fields_and_header_fields(name, parameters)
        self._init_new_message_stack(template, fields, header_fields)