Gets an Amazon Kinesis shard iterator
kinesis_get_shard_iterator(stream, shard,
shard_iterator_type = c("TRIM_HORIZON", "LATEST", "AT_SEQUENCE_NUMBER",
"AFTER_SEQUENCE_NUMBER", "AT_TIMESTAMP"), ...)
the name of the stream to describe
the shard ID of the Kinesis Data Streams shard to get the iterator for
determines how the shard iterator is used to start reading data records from the shard
optional further parameters that might be required for some of the above parameter combinations
list of ShardIterator