Bill Cosby’s attorneys are trying to get their hands on AIG Property Casualty’s case files to find out how the New York insurer has dealt with other policyholders’ claims involving accusations of sexual misconduct as the company fights the embattled entertainer on similar grounds here in Massachusetts. "We think this is very relevant for this case," Cosby’s lawyer Mikaela Gallagher-Whitman told Magistrate Judge David H. Hennessy at a hearing yesterday in U.S. District Court in Boston. AIG is suing to extricate itself from paying out potential financial awards to seven women over their rape claims against the fallen comedian.