/// <summary>
 /// Return a converter delegate that converts a TPhysical readonly-span to a TLogical span.
 /// </summary>
 /// <returns>
 /// A delegate of type LogicalRead&lt;TLogical, TPhysical&gt;.Converter
 /// </returns>
 /// <param name="columnDescriptor">The descriptor of the column to be converted.</param>
 /// <param name="columnChunkMetaData">The metadata of the column-chunk to be converted.</param>
 public virtual Delegate GetConverter <TLogical, TPhysical>(ColumnDescriptor columnDescriptor, ColumnChunkMetaData columnChunkMetaData)
     where TPhysical : unmanaged
 {
     return(LogicalRead <TLogical, TPhysical> .GetConverter(columnDescriptor, columnChunkMetaData));
 }