public static ClassCode parse(final String operationName) {
      return (ClassCode) CODE_NAME_MAP.get(operationName);
    }
Returns the {@code ClassCode} represented by specified string.

@param operationName the operation name associated with a {@code ClassCode}
@return the {@code ClassCode} represented by specified string
geode-dunit/src/main/java/org/apache/geode/security/generator/AuthzCredentialGenerator.java