private ConfigOverlay applyDeleteHandler(CommandOperation op, ConfigOverlay overlay) { String name = op.getStr(CommandOperation.ROOT_OBJ); if (op.hasError()) return overlay; if (overlay.getReqHandlers().containsKey(name)) { return overlay.deleteHandler(name); } else { op.addError(MessageFormat.format("NO such requestHandler ''{0}'' ", name)); return overlay; } }