public boolean visit(SQLIdentifierExpr x) {
String name = x.getName();
name = WallVisitorUtils.form(name);
if (config.isVariantCheck() && config.getDenyVariants().contains(name)) {
getViolations().add(new IllegalSQLObjectViolation(ErrorCode.VARIANT_DENY, "variable not allow : " + name,
toSQL(x)));
}
return true;
}