public Optional<String> getQueryLiteralValue(String parameter) {
        return Optional.ofNullable(queryLiterals.get(parameter));
    }
Gets a specific query string literal parameter value.

@param parameter Case-sensitive name of the parameter to retrieve.
@return Returns the optionally found parameter value.
smithy-model/src/main/java/software/amazon/smithy/model/pattern/UriPattern.java