args_new()instantiates a newargsnode.args_type()checks if the node is aargsnode.args_seq_get()returns all the child nodes as a list.args_get()returns node at positionindex.args_set()sets node at positionindexand deletes the previous node.args_rep()sets node at positionindexand returns the previous node.args_ins()inserts nodes starting from positionindex.