native
Provides access to the underlying native sheet object.
Streaming Engine Caution: Streaming engines (POI SXSSF, FastExcel) flush rows to disk periodically to save memory. Once a row is flushed, it cannot be modified using the native object.
Safe Patterns: - Call BEFORE adding rows for: Freeze panes, sheet protection, zoom level, print setup. - Call AFTER adding rows for: Auto filters (works on sheet metadata).
Unsafe Patterns: - Attempting to modify or read rows that have already been flushed.
Parameters
block
the callback receiving the native sheet
Type Parameters
T
the expected native sheet type