private boolean changeInSparseNullStorage(int colIndex) {
		if (!schema.isSparseColumn(colIndex)) {
			return false;
		}
		return !getField(colIndex).isNull();
	}
Check for a change in a sparse column's storage size when setting a column to the null state.
@param colIndex field column index within this record.
@return true for a sparse column which is transitioning between a null and non-null state,
else false.
Ghidra/Framework/DB/src/main/java/db/SparseRecord.java