In the new system for Jones Legal Investigation Services, a client-attorney provides information about a case and requests that a case-investigation be conducted. The cases that this firm specializes in typically involve a client, one or more defendants, and zero or more witnesses. The investigator employs a variety of investigative techniques, including interviews, research, ground photos, ground videos, aerial photos, and aerial videos. Develop a class diagram for this situation. Limit your diagram to developing the classes, class relationships, and multiplicities; do not worry about class attributes or methods.