valueParser.parse(spec, key, value);
      }
    }

    return spec;
  }

  /** Returns a CacheBuilderSpec that will prevent caching. */
  public static CacheBuilderSpec disableCaching() {
    // Maximum size of zero is one way to block caching
    return CacheBuilderSpec.parse("maximumSize=0");
  }

        .addEqualityGroup(parse(""), parse(""))
        .addEqualityGroup(parse("concurrencyLevel=7"), parse("concurrencyLevel=7"))
        .addEqualityGroup(parse("concurrencyLevel=15"), parse("concurrencyLevel=15"))
        .addEqualityGroup(parse("initialCapacity=7"), parse("initialCapacity=7"))
        .addEqualityGroup(parse("initialCapacity=15"), parse("initialCapacity=15"))
        .addEqualityGroup(parse("maximumSize=7"), parse("maximumSize=7"))

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;

// TODO(b/65488446): Make this a public API.
/** Utility method to parse the system class path. */
final class ClassPathUtil {
  private ClassPathUtil() {}

  /**
   * Returns the URLs in the class path specified by the {@code java.class.path} {@linkplain

        .addEqualityGroup(parse(""), parse(""))
        .addEqualityGroup(parse("concurrencyLevel=7"), parse("concurrencyLevel=7"))
        .addEqualityGroup(parse("concurrencyLevel=15"), parse("concurrencyLevel=15"))
        .addEqualityGroup(parse("initialCapacity=7"), parse("initialCapacity=7"))
        .addEqualityGroup(parse("initialCapacity=15"), parse("initialCapacity=15"))
        .addEqualityGroup(parse("maximumSize=7"), parse("maximumSize=7"))

  public static byte parseUnsignedByte(String string, int radix) {
    int parse = Integer.parseInt(checkNotNull(string), radix);
    // We need to throw a NumberFormatException, so we have to duplicate checkedCast. =(
    if (parse >> Byte.SIZE == 0) {
      return (byte) parse;
    } else {
      throw new NumberFormatException("out of range: " + parse);
    }
  }

  /**

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;

// TODO(b/65488446): Make this a public API.
/** Utility method to parse the system class path. */
final class ClassPathUtil {
  private ClassPathUtil() {}

  /**
   * Returns the URLs in the class path specified by the {@code java.class.path} {@linkplain

   * URLs</a>. (<a href="https://goo.gl/jfVxXW">If the escaper were to leave these characters
   * unescaped, they would be escaped by the consumer at parse time, anyway.</a>) Additionally, the
   * escaper escapes the slash character ("/"). While slashes are acceptable in URL paths, they are
   * considered by the specification to be separators between "path segments." This implies that, if

    }
  }

  public void testParseIntWithRadixLimits() {
    // loops through all legal radix values.
    for (int radix = Character.MIN_RADIX; radix <= Character.MAX_RADIX; radix++) {
      // tests can successfully parse a number string with this radix.
      String maxAsString = Long.toString((1L << 32) - 1, radix);
      assertThat(UnsignedInts.parseUnsignedInt(maxAsString, radix)).isEqualTo(-1);

      try {

    checkTryParse(Float.POSITIVE_INFINITY, "Infinity");
    checkTryParse(Float.POSITIVE_INFINITY, "+Infinity");
    checkTryParse(Float.NEGATIVE_INFINITY, "-Infinity");
  }

  private static final String[] BAD_TRY_PARSE_INPUTS = {
    "",
    "+-",
    "+-0",
    " 5",
    "32 ",
    " 55 ",
    "infinity",
    "POSITIVE_INFINITY",
    "0x9A",
    "0x9A.bE-5",
    ".",
    ".e5",
    "NaNd",

   */
  public static boolean isInetAddress(String ipString) {
    return ipStringToBytes(ipString) != null;
  }

  /** Returns {@code null} if unable to parse into a {@code byte[]}. */
  @CheckForNull
  private static byte[] ipStringToBytes(String ipStringParam) {
    String ipString = ipStringParam;
    // Make a first pass to categorize the characters in this string.