@Override
    String convert(CaseFormat format, String s) {
      if (format == LOWER_UNDERSCORE) {
        return s.replace('-', '_');
      }
      if (format == UPPER_UNDERSCORE) {
        return Ascii.toUpperCase(s.replace('-', '_'));
      }
      return super.convert(format, s);
    }
  },

  /** C++ variable naming convention, e.g., "lower_underscore". */
  LOWER_UNDERSCORE(CharMatcher.is('_'), "_") {
    @Override

    @Override
    String convert(CaseFormat format, String s) {
      if (format == LOWER_UNDERSCORE) {
        return s.replace('-', '_');
      }
      if (format == UPPER_UNDERSCORE) {
        return Ascii.toUpperCase(s.replace('-', '_'));
      }
      return super.convert(format, s);
    }
  },

  /** C++ variable naming convention, e.g., "lower_underscore". */
  LOWER_UNDERSCORE(CharMatcher.is('_'), "_") {
    @Override

      if (ch == '\t' || ch == '\n' || ch == '\r') {
        // Only these whitespace chars are permitted in XML,
        if (shouldEscapeWhitespaceChars) {
          assertEscaping(xmlEscaper, "&#x" + Integer.toHexString(ch).toUpperCase() + ";", ch);
        } else {
          assertUnescaped(xmlEscaper, ch);
        }
      } else {
        // and everything else is replaced with FFFD.
        assertEscaping(xmlEscaper, "\uFFFD", ch);
      }

        if (method != null) {
            String propertyName = method.getPropertyName();
            String isGetterName = "is" + Character.toUpperCase(propertyName.charAt(0)) + propertyName.substring(1);
            return method.getReplacedAccessors().stream()

                    } else {
                        wantedNature = Metadata.Nature.RELEASE;
                    }
                } else {
                    wantedNature = Metadata.Nature.valueOf(natureString.toUpperCase(Locale.ROOT));
                }

                Map<String, ArtifactRepository> versionIndex = getVersions(session, result, request, wantedNature);

                List<Version> versions = new ArrayList<>();

     *
     * @param ch The character to convert.
     * @return An upper case hexadecimal <code>String</code>
     */
    protected static String hex(char ch) {
        return Integer.toHexString(ch).toUpperCase(Locale.ENGLISH);
    }

    /**
     * <p>Checks if the value is in the given array.</p>
     *
     * <p>The method returns <code>false</code> if a <code>null</code> array is passed in.</p>
     *

      }
      checkState(!hasUpperCase(), "Cannot call upperCase() on a mixed-case alphabet");
      char[] upperCased = new char[chars.length];
      for (int i = 0; i < chars.length; i++) {
        upperCased[i] = Ascii.toUpperCase(chars[i]);
      }
      Alphabet upperCase = new Alphabet(name + ".upperCase()", upperCased);
      return ignoreCase ? upperCase.ignoreCase() : upperCase;
    }

    Alphabet lowerCase() {