188      * <p> An {@code Info} instance has various accessor methods that return
 189      * information about the process, if the process is alive and the
 190      * information is available.
 191      *
 192      * @return a snapshot of information about the process, always non-null
 193      */
 194     Info info();
 195 
 196     /**
 197      * Information snapshot about the process.
 198      * The attributes of a process vary by operating system and are not available
 199      * in all implementations.  Information about processes is limited
 200      * by the operating system privileges of the process making the request.
 201      * The return types are {@code Optional<T>} allowing explicit tests
 202      * and actions if the value is available.
 203      * @since 1.9
 204      */
 205     public interface Info {
 206         /**
 207          * Returns the executable pathname of the process.





 208          *
 209          * @return an {@code Optional<String>} of the executable pathname
 210          *         of the process
 211          */
 212         public Optional<String> command();
 213 
 214         /**
 215          * Returns an array of Strings of the arguments of the process.




 216          *
 217          * @return an {@code Optional<String[]>} of the arguments of the process
 218          */
 219         public Optional<String[]> arguments();
 220 
 221         /**
 222          * Returns the start time of the process.
 223          *
 224          * @return an {@code Optional<Instant>} of the start time of the process
 225          */
 226         public Optional<Instant> startInstant();
 227 
 228         /**
 229          * Returns the total cputime accumulated of the process.
 230          *
 231          * @return an {@code Optional<Duration>} for the accumulated total cputime
 232          */
 233         public Optional<Duration> totalCpuDuration();
 234 
 235         /**

 188      * <p> An {@code Info} instance has various accessor methods that return
 189      * information about the process, if the process is alive and the
 190      * information is available.
 191      *
 192      * @return a snapshot of information about the process, always non-null
 193      */
 194     Info info();
 195 
 196     /**
 197      * Information snapshot about the process.
 198      * The attributes of a process vary by operating system and are not available
 199      * in all implementations.  Information about processes is limited
 200      * by the operating system privileges of the process making the request.
 201      * The return types are {@code Optional<T>} allowing explicit tests
 202      * and actions if the value is available.
 203      * @since 1.9
 204      */
 205     public interface Info {
 206         /**
 207          * Returns the executable pathname of the process.
 208          * <p>
 209          * <em>Note that the returned pathname may be truncated on some
 210          * platforms due to system limitations. It may also only contain
 211          * the name of the executable without the full path information.
 212          * </em>
 213          *
 214          * @return an {@code Optional<String>} of the executable pathname
 215          *         of the process
 216          */
 217         public Optional<String> command();
 218 
 219         /**
 220          * Returns an array of Strings of the arguments of the process.
 221          * <p>
 222          * <em>Note that the argument list may be truncated on some
 223          * platforms due to system limitations.
 224          * </em>
 225          *
 226          * @return an {@code Optional<String[]>} of the arguments of the process
 227          */
 228         public Optional<String[]> arguments();
 229 
 230         /**
 231          * Returns the start time of the process.
 232          *
 233          * @return an {@code Optional<Instant>} of the start time of the process
 234          */
 235         public Optional<Instant> startInstant();
 236 
 237         /**
 238          * Returns the total cputime accumulated of the process.
 239          *
 240          * @return an {@code Optional<Duration>} for the accumulated total cputime
 241          */
 242         public Optional<Duration> totalCpuDuration();
 243 
 244         /**