Draw a System Sequence Diagram $($SSD$)$ to illustrate the interactions between the actors and the system for the following scenario:

A user creates a new document and is prompted to invite collaborators. The user adds collaborators, and the system sends invitations. Collaborators accept or decline the invitations, and the system validates their responses. If any validations fail, the system notifies the user, allowing them to manage invitations $($looping back to the invitation step$).$ Upon successful validation, the system grants access to collaborators, enabling collaborative document editing. The system saves changes and checks if users want to invite more collaborators, iterating the process back to the invitation step. When editing is complete, the system finalizes the document.