Align member name with AsSpan overloads

Author: sakno

src/DotNext.Tests/Runtime/InteropServices/PointerTests.cs

@@ -294,4 +294,17 @@ public static unsafe void ClearValue()
 
         Equal(0, i);
     }
+
+    [Fact]
+    public static unsafe void SpanOverElements()
+    {
+        const int count = 2;
+        Pointer<int> ptr = stackalloc int[count];
+        var elements = ptr.AsSpan(count);
+        elements[0] = 42;
+        elements[1] = 43;
+
+        Equal(42, ptr[0]);
+        Equal(43, ptr[1]);
+    }
 }

src/DotNext.Tests/Runtime/InteropServices/UnmanagedMemoryTests.cs

@@ -7,7 +7,7 @@ public sealed class UnmanagedMemoryTests : Test
     [Fact]
     public static void DefaultValue()
     {
-        var memory = default(UnmanagedMemory<Int128>);
+        using var memory = default(UnmanagedMemory<Int128>);
         True(memory.Pointer.IsNull);
         True(Unsafe.IsNullRef(in memory.Pointer.Value));
 

src/DotNext.Unsafe/IO/MemoryMappedFiles/MappedMemory.cs

@@ -36,7 +36,7 @@ internal MappedMemory(MemoryMappedViewAccessor accessor)
 
     public void Flush() => accessor.Flush();
 
-    public override Span<byte> GetSpan() => Pointer.ToSpan((int)accessor.Capacity);
+    public override Span<byte> GetSpan() => Pointer.AsSpan((int)accessor.Capacity);
 
     public override Memory<byte> Memory => CreateMemory((int)accessor.Capacity);
 

src/DotNext.Unsafe/IO/MemoryMappedFiles/MemoryMappedDirectAccessor.cs

@@ -59,7 +59,7 @@ internal MemoryMappedDirectAccessor(MemoryMappedViewAccessor accessor)
     /// Represents memory-mapped file segment in the form of <see cref="Span{T}"/>.
     /// </summary>
     /// <value><see cref="Span{T}"/> representing virtual memory of the mapped file segment.</value>
-    public readonly Span<byte> Bytes => Pointer.ToSpan(int.CreateSaturating(accessor.Capacity));
+    public readonly Span<byte> Bytes => Pointer.AsSpan(int.CreateSaturating(accessor.Capacity));
 
     /// <summary>
     /// Sets all bits of allocated memory to zero.

src/DotNext.Unsafe/Runtime/InteropServices/Pointer.cs

@@ -109,7 +109,7 @@ public unsafe void Fill(T value, nuint count)
     /// </summary>
     /// <param name="length">The number of elements located in the unmanaged memory identified by this pointer.</param>
     /// <returns><see cref="Span{T}"/> representing elements in the unmanaged memory.</returns>
-    public unsafe Span<T> ToSpan(int length) => IsNull ? [] : new(value, length);
+    public unsafe Span<T> AsSpan(int length) => IsNull ? [] : new(value, length);
 
     /// <summary>
     /// Converts this pointer into span of bytes.