def add_split_gateway(node_id_to_add_after, nodes_ids, process_dict, diagram_graph):
split_gateway_id = node_id_to_add_after + "<STR_LIT>"<EOL>process_id = default_process_id<EOL>gateway_type = get_gateway_type(node_id_to_add_after, nodes_ids, process_dict)<EOL>activity = "<STR_LIT>"<EOL>add_node_info_to_diagram_graph(split_gateway_id, gateway_type, activity, process_id, diagram_graph)<EOL>return split_gateway_id<EOL>
:param node_id_to_add_after:
:param nodes_ids:
:param process_dict:
:param diagram_graph:
:return: