Change the method name "headExits" to "exists".

[Kui-Liu]

The method is checking whether the "name" exists in the "headers" or not, thus the method should be named "exists" but not "headExits".

public boolean headerExits(String name) {
return this.headers.containsKey(name);]
}

[ShangwenWang]

Hello everyone,
In this case, I think "exists" is euqal to "contains". Maybe both of them can be considered as suitable?