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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 export_flow_process_data(params, process):
 """ Creates a new SequenceFlow XML element for given edge parameters and adds it to 'process' element. :param params: dictionary with edge parameters, :param process: object of Element class, representing BPMN XML 'process' element (root for sequence flows) """

        output_flow = eTree.SubElement(process, consts.Consts.sequence_flow)
        output_flow.set(consts.Consts.id, params[consts.Consts.id])
        output_flow.set(consts.Consts.name, params[consts.Consts.name])
        output_flow.set(consts.Consts.source_ref, params[consts.Consts.source_ref])
        output_flow.set(consts.Consts.target_ref, params[consts.Consts.target_ref])
        if consts.Consts.condition_expression in params:
            condition_expression_params = params[consts.Consts.condition_expression]
            condition_expression = eTree.SubElement(output_flow, consts.Consts.condition_expression)
            condition_expression.set(consts.Consts.id, condition_expression_params[consts.Consts.id])
            condition_expression.set(consts.Consts.id, condition_expression_params[consts.Consts.id])
            condition_expression.text = condition_expression_params[consts.Consts.condition_expression]
            output_flow.set(consts.Consts.name, condition_expression_params[consts.Consts.condition_expression])