Key(String, String, Boolean) Constructor

Initialize key from namespace, optional set name and user key. The set name and user defined key are converted to a digest before sending to the server. The user key is not used or returned by the server by default. If the user key needs to persist on the server, use one of the following methods:

• Set "WritePolicy.sendKey" to true. In this case, the key will be sent to the server for storage on writes and retrieved on multi-record scans and queries.
• Explicitly store and retrieve the key in a bin.

public Key(
	string ns,
	string setName,
	bool key
)