Parameterable

Parameterable can be explained as useful for header manipulation, but less critical compared to Address or URI.
The Parameterable interface represents SIP header field values that may include optional parameters. It is implemented by SIP headers that allow parameters to be appended to their values. Common examples include address-related headers such as Contact, From, To, Route, Record-Route, and Reply-To, all of which extend Parameterable. Additionally, non-address headers such as Accept, Accept-Encoding, Alert-Info, Call-Info, Content-Disposition, Content-Type, Error-Info, Retry-After, and Via are also Parameterable. The interface provides a unified way to handle headers with name-value pairs, facilitating the management and manipulation of SIP message components while ensuring compliance with SIP protocol requirements. By extending Cloneable, Parameterable allows the creation of copies for headers, making it flexible for modifying or replicating headers without altering the originals.