code: @Override
    public void endVisit(PropertyAnnotation node) {
      FieldDeclaration field = (FieldDeclaration) node.getParent();
      TypeMirror fieldType = field.getTypeMirror();
      String getter = node.getGetter();
      String setter = node.getSetter();
      if (field.getFragments().size() > 1) {
        if (getter != null) {
          ErrorUtil.error(field, "@Property getter declared for multiple fields");
          return;
        }
        if (setter != null) {
          ErrorUtil.error(field, "@Property setter declared for multiple fields");
          return;
        }
      } else {
        // Check that specified accessors exist.
        TypeElement enclosingType = TreeUtil.getEnclosingTypeElement(node);
        if (getter != null) {
          if (ElementUtil.findMethod(enclosingType, getter) == null) {
            ErrorUtil.error(field, "Non-existent getter specified: " + getter);
          }
        }
        if (setter != null) {
          if (ElementUtil.findMethod(
              enclosingType, setter, TypeUtil.getQualifiedName(fieldType)) == null) {
            ErrorUtil.error(field, "Non-existent setter specified: " + setter);
          }
        }
      }
    }
docs: Make sure attempt isn't made to specify an accessor method for fields with multiple fragments,
  since each variable needs unique accessors.