/** * * * <pre> * For snapshot read-only transactions, the read timestamp chosen * for the transaction. Not returned by default: see * [TransactionOptions.ReadOnly.return_read_timestamp][google.spanner.v1.TransactionOptions.ReadOnly.return_read_timestamp]. * A timestamp in RFC3339 UTC \"Zulu\" format, accurate to nanoseconds. * Example: `"2014-10-02T15:01:23.045123456Z"`. * </pre> * * <code>.google.protobuf.Timestamp read_timestamp = 2;</code> */ private com.google.protobuf.SingleFieldBuilderV3< com.google.protobuf.Timestamp, com.google.protobuf.Timestamp.Builder, com.google.protobuf.TimestampOrBuilder> getReadTimestampFieldBuilder() { if (readTimestampBuilder_ == null) { readTimestampBuilder_ = new com.google.protobuf.SingleFieldBuilderV3< com.google.protobuf.Timestamp, com.google.protobuf.Timestamp.Builder, com.google.protobuf.TimestampOrBuilder>( getReadTimestamp(), getParentForChildren(), isClean()); readTimestamp_ = null; } return readTimestampBuilder_; }