question: private Map < Member , String [ ] > inspectClass ( Class < ? > clazz ) { InputStream is = clazz . getResourceAsStream ( ClassUtils . getClassFileName ( clazz ) ) ; if ( is == null ) { if ( LOGGER . isDebugEnabled ( ) ) { LOGGER . debug ( "Cannot find '.class' file for class [" + clazz + "] - unable to determine constructors/methods parameter names" ) ; } return NO_DEBUG_INFO_MAP ; } try { ClassReader classReader = new ClassReader ( is ) ; Map < Member , String [ ] > map = new ConcurrentHashMap < Member , String [ ] > ( ) ; classReader . accept ( new ParameterNameDiscoveringVisitor ( clazz , map ) , false ) ; return map ; } catch ( IOException ex ) { if ( LOGGER . isDebugEnabled ( ) ) { LOGGER . debug ( "Exception thrown while reading '.class' file for class [" + clazz + "] - unable to determine constructors/methods parameter names" , ex ) ; } } finally { try { is . close ( ) ; } catch ( IOException ex ) { } } return NO_DEBUG_INFO_MAP ; }
target:  Inspects the target class. Exceptions will be logged and a maker map returned to indicate the lack of debug information.