[GitHub] [pulsar-client-go] xujianhai666 opened a new issue #68: Use ConfigOption withxxxx for simple usage

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xujianhai666 opened a new issue #68: Use ConfigOption withxxxx for simple usage
URL: https://github.com/apache/pulsar-client-go/issues/68
 
 
   **Is your feature request related to a problem? Please describe.**
   now, when we use client 、producer、consumer, we must provide CleintOption ProducerOption ConsumerOption, but there are many params on Option, which puzzle users. 
   according to Rob Pike: https://commandcenter.blogspot.com/2014/01/self-referential-functions-and-design.html and Dave cheney: https://dave.cheney.net/2014/10/17/functional-options-for-friendly-apis , we should use WithXXX. for example:
   
   ```
   type ClientOption func(opts ClientOptions) 
   func WithURL(URL string) ClientOption {
       return func(opts ClientOptions) {
            .....
       }
   }
   ```
   
   
   **Describe the solution you'd like**
   A clear and concise description of what you want to happen.
   
   **Describe alternatives you've considered**
   A clear and concise description of any alternative solutions or features you've considered.
   
   **Additional context**
   Add any other context or screenshots about the feature request here.
   

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