public static Literal of(int value) {
        return Literal.integerLiteral(value);
    }
Construct an integer literal for the given value, and returns it as an expression.

@param value the integer value.
@return the integer value as a literal expression.
smithy-rules-engine/src/main/java/software/amazon/smithy/rulesengine/language/syntax/expressions/Expression.java