def load_template(self, name, *parameters):
template, fields, header_fields = self._set_templates_fields_and_header_fields(name, parameters)<EOL>self._init_new_message_stack(template, fields, header_fields)<EOL>
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 |