RecordCreator
The RecordCreator class provides a way to create empty records. RecordRef represents a reference to a record’s underlying data, and can be accessed & manipulated via the RecordCreator class.
Record information
var_data_size: The number of bytes of variable-length data in this record.
Methods

finalize_record() -> RecordRef :
Returns the RecordRef that contains the data for the record.

Sets the capacity in bytes for variable-length data in this record to var_data_size.
reset((int)var_data_size=0) -> None :