public static StringEquals ofExpressions(ToExpression arg1, String arg2) {
        return ofExpressions(arg1, Expression.of(arg2));
    }
Creates a {@link StringEquals} function from the given expressions.

@param arg1 the first argument to compare.
@param arg2 the second argument to compare.
@return The resulting {@link StringEquals} function.
smithy-rules-engine/src/main/java/software/amazon/smithy/rulesengine/language/syntax/expressions/functions/StringEquals.java