public static ResolvedType glb ( Set < ResolvedType > types ) { if ( types . size ( ) == 0 ) { throw new IllegalArgumentException ( ) ; } if ( types . size ( ) == 1 ) { return types . iterator ( ) . next ( ) ; } return new ResolvedIntersectionType ( types ) ; }
See JLS 5 . 1 . 10 . Capture Conversion .