@Override
    public StringConstant visitString_value(@NotNull SiddhiQLParser.String_valueContext ctx) {

        StringConstant stringConstant = Expression.value(ctx.STRING_LITERAL().getText());
        populateQueryContext(stringConstant, ctx);
        return stringConstant;
    }
{@inheritDoc}
<p>The default implementation returns the result of calling
{@link #visitChildren} on {@code ctx}.</p>

@param ctx
modules/siddhi-query-compiler/src/main/java/io/siddhi/query/compiler/internal/SiddhiQLBaseVisitorImpl.java