Create a new directory anywhere you’d like for this project: 
mkdir pulsar-go-getting-started && cd pulsar-go-getting-started
Initialize the Go module and download the Pulsar Go client dependency: 
go mod init pulsar-go-getting-started
go get github.com/apache/pulsar-client-go
go get github.com/apache/pulsar-client-go/pulsar/auth
go get github.com/apache/pulsar-client-go/pulsar