public static String readUtf8File(String path) {
        return readUtf8File(Paths.get(path));
    }
Reads a file into a UTF-8 encoded string.

@param path Path to the file to read.
@return Returns the contents of the file.
@throws RuntimeException if the file can't be read or encoded.
smithy-utils/src/main/java/software/amazon/smithy/utils/IoUtils.java