1. Create a code template to generate OBP/CBP functions and iterator

2. Generated OBP/CBP functions and iterator to all supported API endpoints
3. Updated Readme with examples

Author: Jin Huang

README.md

@@ -1,4 +1,5 @@
 # go-zendesk
+
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@@ -12,7 +13,7 @@ Zendesk API client library for Go
 
 ## Installation
 
-``` shell
+```shell
 $ go get github.com/nukosuke/go-zendesk
 ```
 
@@ -48,14 +49,48 @@ func main() {
 ```
 
 ## Want to mock API?
+
 go-zendesk has a [mock package](https://pkg.go.dev/github.com/nukosuke/go-zendesk/zendesk/mock) generated by [golang/mock](https://github.com/golang/mock).
 You can simulate the response from Zendesk API with it.
 
 ## To regenerate the mock client
 
 `go generate ./...`
 
+## To regenerate CBP(Cursor Based Pagination), OBP(Offset Based Pagination) helper function and Iterators
+
+If a new API endpoint supports CBP, add a new element to the funcData in script/codegen/main.go file like this:
+
+```go
+{
+    FuncName:    "Automations",
+    ObjectName:  "Automation",
+    ApiEndpoint: "/automation.json",
+    JsonName:    "automations",
+    FileName:    "automation",
+},
+```
+should use the script to generate the helper functions and the iterator
+`go run script/codegen/main.go`
+
+## Example for using the CBP/OBP iterator
+
+```go
+ops := NewPaginationOptions()
+it := client.GetTicketsIterator(ctx, ops)
+for it.HasMore() {
+    tickets, err := it.GetNext()
+    if err == nil {
+        for _, ticket := range tickets {
+            println(ticket.Subject)
+        }
+    }
+}
+```
+
+
 ## Maintainer
+
 - [nukosuke](https://github.com/nukosuke)
 
 ## License
@@ -64,5 +99,4 @@ MIT License.
 
 See the file [LICENSE](./LICENSE).
 
-
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