code: private TypeResolver getTypeResolver() {
          TypeResolver typeResolver = scannerContext.peek(TypeResolver.class);
          if (typeResolver == null) {
              throw new IllegalStateException("Cannot find Java type resolver.");
          }
          return typeResolver;
      }
docs: Return the type resolver.
  <p>
  Looks up an instance in the scanner context. If none can be found the default
  resolver is used.
  </p>
  
  @return The type resolver.