looks ahead cnt without changing the internal data "pointers" of the data source (this is mostly needed by possibly infinite constructs like lazy streams, because they do not know by definition their boundaries)
either the element or ITERATION_STATUS.EO_STRM if we hit the end of the stream before finding the "cnt" element
Optional
cnt: numberthe elements to look ahead
Generated using TypeDoc
Every data source wich feeds data into the lazy stream or stream generally must implement this interface
It is basically an iteratable to the core