Space used in UnmanagedMemoryAccessor.WriteArray is not documented

The important bit of this issue is here: https://referencesource.microsoft.com/#mscorlib/system/runtime/interopservices/safebuffer.cs,334

`WriteArray` is specified to take an array and write it to an unmanaged buffer. However, the space used for each element of the array is not the standard `Marshal.SizeOf`, it's an internal-only `Marshal.SizeOfAligned`, which can be significantly different. This means that callers can't know how much space is actually required to write the array without reading the source code themselves.

Inizia dal codice sorgente referenziato SafeBuffer.cs alla riga 334 e individua la documentazione dell’API per UnmanagedMemoryAccessor.WriteArray. Documenta che ogni elemento dell’array usa la dimensione interna allineata invece di Marshal.SizeOf, in modo che i chiamanti possano determinare lo spazio richiesto nel buffer unmanaged.

Scritto dal modello di indicizzazione a partire dal testo della issue.