Exporters and importers are regularly involved in the trade finance function. Examples, letters of credits and or documentary collections.In detail, and by providing examples, please discuss the differences between the two methods of trade finance, and state advantages and disadvantages of each method.Further, please set up a flow chart, depicting the movement of goods from an exporter to the importer, and the function of trade finance, as related to commercial, transport and financial documents. Finally, what is the role of the commercial banks in this process?