How to create empty redis stream?

@elise_daugherty 

To create an empty Redis stream, you can use the XADD command and specify a key for the stream. Here's an example of how to create an empty stream called "mystream":

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XADD mystream *

In this command, the "mystream" is the key of the stream and the "*" is the unique ID for the message. Since the stream is empty, no other fields or values need to be specified. This command will create an empty stream that you can start adding data to using the XADD command with different fields and values.