This question is in reference to Atlassian Documentation: Clone a repository
"If you are using the SSH protocol, ensure sure your public key is in Bitbucket and loaded on the local system to which you are cloning."
I don´t understand this sentence. What do I have to do? How do I "ensure sure my public key is in Bitbucket and loaded on the local system to which I am cloning". Which steps should I use to do this? I´m a beginner with bitbucket.