code: public static RenameContext mergeFrom(RenamePOptions.Builder optionsBuilder) {
      RenamePOptions masterOptions = FileSystemOptions.renameDefaults(ServerConfiguration.global());
      RenamePOptions.Builder mergedOptionsBuilder =
          masterOptions.toBuilder().mergeFrom(optionsBuilder.build());
      return create(mergedOptionsBuilder);
    }
docs: Merges and embeds the given {@link RenamePOptions} with the corresponding master options.
  
  @param optionsBuilder Builder for proto {@link RenamePOptions} to merge with defaults
  @return the instance of {@link RenameContext} with default values for master