nnull
                  java.util.Optional&lt;Long&gt;&nbsp;readVersion,
                  @Nonnull
                  java.util.Optional&lt;String&gt;&nbsp;isolationLevel,
                  @Nonnull
                  java.util.Optional&lt;Boolean&gt;&nbsp;isBlindAppend,
                  @Nonnull
                  java.util.Optional&lt;java.util.Map&lt;String,String&gt;&gt;&nbsp;operationMetrics,
                  @Nonnull
                  java.util.Optional&lt;String&gt;&nbsp;userMetadata,
               