Add MemberGroup descriptions (System.Something)

xml/System.Buffers.Binary/BinaryPrimitives.xml

@@ -1270,6 +1270,11 @@ Reads exactly 8 bytes from the beginning of the span.
           <paramref name="source" /> is too small to contain a <see cref="T:System.UIntPtr" />.</exception>
       </Docs>
     </Member>
+    <MemberGroup MemberName="ReverseEndianness">
+      <Docs>
+        <summary>Reverses a primitive value by performing an endianness swap of the specified <see cref="T:System.Int16" /> value.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="ReverseEndianness">
       <MemberSignature Language="C#" Value="public static byte ReverseEndianness (byte value);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig unsigned int8 ReverseEndianness(unsigned int8 value) cil managed" />

xml/System.Buffers.Text/Base64.xml

@@ -161,6 +161,11 @@
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="DecodeFromUtf8">
+      <Docs>
+        <summary>Decodes the span of UTF-8 encoded text represented as base 64 into binary data. If the input is not a multiple of 4, it will decode as much as it can, to the closest multiple of 4.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="DecodeFromUtf8">
       <MemberSignature Language="C#" Value="public static byte[] DecodeFromUtf8 (ReadOnlySpan&lt;byte&gt; source);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig unsigned int8[] DecodeFromUtf8(valuetype System.ReadOnlySpan`1&lt;unsigned int8&gt; source) cil managed" />
@@ -500,6 +505,11 @@ This method cannot return the <xref:System.Buffers.OperationStatus.DestinationTo
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="EncodeToUtf8">
+      <Docs>
+        <summary>Encodes the span of binary data into UTF-8 encoded text represented as base 64.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="EncodeToUtf8">
       <MemberSignature Language="C#" Value="public static byte[] EncodeToUtf8 (ReadOnlySpan&lt;byte&gt; source);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig unsigned int8[] EncodeToUtf8(valuetype System.ReadOnlySpan`1&lt;unsigned int8&gt; source) cil managed" />
@@ -851,6 +861,11 @@ This method cannot return <xref:System.Buffers.OperationStatus.NeedMoreData?disp
           <paramref name="length" /> is less than 0 or larger than 1610612733 (since encode inflates the data by 4/3).</exception>
       </Docs>
     </Member>
+    <MemberGroup MemberName="IsValid">
+      <Docs>
+        <summary>Validates that the specified span of text is comprised of valid base-64 encoded data.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="IsValid">
       <MemberSignature Language="C#" Value="public static bool IsValid (ReadOnlySpan&lt;byte&gt; base64TextUtf8);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig bool IsValid(valuetype System.ReadOnlySpan`1&lt;unsigned int8&gt; base64TextUtf8) cil managed" />

xml/System.Buffers.Text/Base64Url.xml

@@ -34,6 +34,11 @@
     <remarks>Base64Url encoding uses the same alphabet as standard Base64 encoding, except that the characters '+' and '/' are replaced with '-' and '_' respectively to make the output URL-safe.</remarks>
   </Docs>
   <Members>
+    <MemberGroup MemberName="DecodeFromChars">
+      <Docs>
+        <summary>Decodes the span of unicode ASCII chars represented as Base64Url into binary data.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="DecodeFromChars">
       <MemberSignature Language="C#" Value="public static byte[] DecodeFromChars (ReadOnlySpan&lt;char&gt; source);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig unsigned int8[] DecodeFromChars(valuetype System.ReadOnlySpan`1&lt;char&gt; source) cil managed" />
@@ -175,6 +180,11 @@
         </remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="DecodeFromUtf8">
+      <Docs>
+        <summary>Decodes the span of UTF-8 encoded text represented as Base64Url into binary data.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="DecodeFromUtf8">
       <MemberSignature Language="C#" Value="public static byte[] DecodeFromUtf8 (ReadOnlySpan&lt;byte&gt; source);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig unsigned int8[] DecodeFromUtf8(valuetype System.ReadOnlySpan`1&lt;unsigned int8&gt; source) cil managed" />
@@ -371,6 +381,11 @@
         </exception>
       </Docs>
     </Member>
+    <MemberGroup MemberName="EncodeToChars">
+      <Docs>
+        <summary>Encodes the span of binary data into unicode ASCII chars represented as Base64Url.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="EncodeToChars">
       <MemberSignature Language="C#" Value="public static char[] EncodeToChars (ReadOnlySpan&lt;byte&gt; source);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig char[] EncodeToChars(valuetype System.ReadOnlySpan`1&lt;unsigned int8&gt; source) cil managed" />
@@ -537,6 +552,11 @@
         <remarks>This implementation of the Base64Url encoding omits the optional padding characters. The encoding uses '-' and '_' instead of the '+' and '/' characters used in standard Base64 encoding.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="EncodeToUtf8">
+      <Docs>
+        <summary>Encodes the span of binary data into UTF-8 encoded text represented as Base64Url.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="EncodeToUtf8">
       <MemberSignature Language="C#" Value="public static byte[] EncodeToUtf8 (ReadOnlySpan&lt;byte&gt; source);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig unsigned int8[] EncodeToUtf8(valuetype System.ReadOnlySpan`1&lt;unsigned int8&gt; source) cil managed" />
@@ -735,6 +755,11 @@
         <exception cref="T:System.ArgumentOutOfRangeException">The specified <paramref name="base64Length" /> is less than 0.</exception>
       </Docs>
     </Member>
+    <MemberGroup MemberName="IsValid">
+      <Docs>
+        <summary>Validates that the specified span of text is comprised of valid base-64 encoded data.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="IsValid">
       <MemberSignature Language="C#" Value="public static bool IsValid (ReadOnlySpan&lt;byte&gt; utf8Base64UrlText);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig bool IsValid(valuetype System.ReadOnlySpan`1&lt;unsigned int8&gt; utf8Base64UrlText) cil managed" />

xml/System.Buffers.Text/Utf8Formatter.xml

@@ -44,6 +44,11 @@
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
+    <MemberGroup MemberName="TryFormat">
+      <Docs>
+        <summary>Formats a <see cref="T:System.Byte" /> as a UTF8 string.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="TryFormat">
       <MemberSignature Language="C#" Value="public static bool TryFormat (bool value, Span&lt;byte&gt; destination, out int bytesWritten, System.Buffers.StandardFormat format = default);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig bool TryFormat(bool value, valuetype System.Span`1&lt;unsigned int8&gt; destination, [out] int32&amp; bytesWritten, valuetype System.Buffers.StandardFormat format) cil managed" />

xml/System.Buffers.Text/Utf8Parser.xml

@@ -44,6 +44,11 @@
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
+    <MemberGroup MemberName="TryParse">
+      <Docs>
+        <summary>Parses a <see cref="T:System.Byte" /> at the start of a Utf8 string.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="TryParse">
       <MemberSignature Language="C#" Value="public static bool TryParse (ReadOnlySpan&lt;byte&gt; source, out bool value, out int bytesConsumed, char standardFormat = '\0');" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig bool TryParse(valuetype System.ReadOnlySpan`1&lt;unsigned int8&gt; source, [out] bool&amp; value, [out] int32&amp; bytesConsumed, char standardFormat) cil managed" />

xml/System.Buffers/ArrayBufferWriter`1.xml

@@ -54,6 +54,11 @@
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
+    <MemberGroup MemberName=".ctor">
+      <Docs>
+        <summary>Initializes a new instance of the <see cref="T:System.Buffers.ArrayBufferWriter`1" /> class.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName=".ctor">
       <MemberSignature Language="C#" Value="public ArrayBufferWriter ();" />
       <MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor() cil managed" />

xml/System.Buffers/ArrayPool`1.xml

@@ -122,6 +122,11 @@ Note that this constructor is protected; it can only be called by classes derive
         </remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="Create">
+      <Docs>
+        <summary>Creates a new instance of the <see cref="T:System.Buffers.ArrayPool`1" /> class.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="Create">
       <MemberSignature Language="C#" Value="public static System.Buffers.ArrayPool&lt;T&gt; Create ();" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Buffers.ArrayPool`1&lt;!T&gt; Create() cil managed" />

xml/System.Buffers/MemoryManager`1.xml

@@ -122,6 +122,11 @@ The `MemoryManager<T>` class is used to extend the knowledge of types that <xref
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="CreateMemory">
+      <Docs>
+        <summary>Returns a memory buffer consisting of a specified number of elements from the memory managed by the current memory manager.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="CreateMemory">
       <MemberSignature Language="C#" Value="protected Memory&lt;T&gt; CreateMemory (int length);" />
       <MemberSignature Language="ILAsm" Value=".method familyhidebysig instance valuetype System.Memory`1&lt;!T&gt; CreateMemory(int32 length) cil managed" />

xml/System.Buffers/MemoryPool`1.xml

@@ -95,6 +95,11 @@
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="Dispose">
+      <Docs>
+        <summary>Frees all resources used by the memory pool.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="Dispose">
       <MemberSignature Language="C#" Value="public void Dispose ();" />
       <MemberSignature Language="ILAsm" Value=".method public hidebysig newslot virtual instance void Dispose() cil managed" />

xml/System.Buffers/NIndex.xml

@@ -45,6 +45,11 @@ int lastElement = someArray[^1]; // lastElement = 5
     </example>
   </Docs>
   <Members>
+    <MemberGroup MemberName=".ctor">
+      <Docs>
+        <summary>Initializes a new instance of the <see cref="T:System.Buffers.NIndex" /> class.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName=".ctor">
       <MemberSignature Language="C#" Value="public NIndex (Index index);" />
       <MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor(valuetype System.Index index) cil managed" />
@@ -114,6 +119,11 @@ int lastElement = someArray[^1]; // lastElement = 5
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="Equals">
+      <Docs>
+        <summary>Compares the current NIndex object to another object of the same type for equality.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="Equals">
       <MemberSignature Language="C#" Value="public bool Equals (System.Buffers.NIndex other);" />
       <MemberSignature Language="ILAsm" Value=".method public hidebysig newslot virtual instance bool Equals(valuetype System.Buffers.NIndex other) cil managed" />
@@ -347,6 +357,11 @@ int lastElement = someArray[^1]; // lastElement = 5
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="op_Implicit">
+      <Docs>
+        <summary>Converts an integer number to an NIndex.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="op_Implicit">
       <MemberSignature Language="C#" Value="public static implicit operator System.Buffers.NIndex (Index value);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig specialname valuetype System.Buffers.NIndex op_Implicit(valuetype System.Index value) cil managed" />

xml/System.Buffers/NRange.xml

@@ -40,6 +40,11 @@
     </remarks>
   </Docs>
   <Members>
+    <MemberGroup MemberName=".ctor">
+      <Docs>
+        <summary>Initializes a new instance of the <see cref="T:System.Buffers.NRange" /> class.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName=".ctor">
       <MemberSignature Language="C#" Value="public NRange (Range range);" />
       <MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor(valuetype System.Range range) cil managed" />
@@ -153,6 +158,11 @@
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="Equals">
+      <Docs>
+        <summary>Compares the current <see cref="T:System.Buffers.NRange" /> object to another object of the same type for equality.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="Equals">
       <MemberSignature Language="C#" Value="public bool Equals (System.Buffers.NRange other);" />
       <MemberSignature Language="ILAsm" Value=".method public hidebysig newslot virtual instance bool Equals(valuetype System.Buffers.NRange other) cil managed" />

xml/System.Buffers/ReadOnlySequence`1.xml

@@ -65,6 +65,11 @@
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
+    <MemberGroup MemberName=".ctor">
+      <Docs>
+        <summary>Initializes a new instance of the <see cref="T:System.Buffers.ReadOnlySequence`1" /> class.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName=".ctor">
       <MemberSignature Language="C#" Value="public ReadOnlySequence (ReadOnlyMemory&lt;T&gt; memory);" />
       <MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor(valuetype System.ReadOnlyMemory`1&lt;!T&gt; memory) cil managed" />
@@ -457,6 +462,11 @@
         <exception cref="T:System.ArgumentOutOfRangeException">The position is out of range.</exception>
       </Docs>
     </Member>
+    <MemberGroup MemberName="GetPosition">
+      <Docs>
+        <summary>Returns a new <see cref="T:System.SequencePosition" /> at an <paramref name="offset" /> from the start of the sequence.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="GetPosition">
       <MemberSignature Language="C#" Value="public SequencePosition GetPosition (long offset);" />
       <MemberSignature Language="ILAsm" Value=".method public hidebysig instance valuetype System.SequencePosition GetPosition(int64 offset) cil managed" />
@@ -639,6 +649,11 @@
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="Slice">
+      <Docs>
+        <summary>Forms a slice out of the given <see cref="T:System.Buffers.ReadOnlySequence`1" />, beginning at <paramref name="start" />, with <paramref name="length" /> items.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="Slice">
       <MemberSignature Language="C#" Value="public System.Buffers.ReadOnlySequence&lt;T&gt; Slice (long start);" />
       <MemberSignature Language="ILAsm" Value=".method public hidebysig instance valuetype System.Buffers.ReadOnlySequence`1&lt;!T&gt; Slice(int64 start) cil managed" />

xml/System.Buffers/SearchValues.xml

@@ -22,6 +22,11 @@
       <see cref="T:System.Buffers.SearchValues`1" /> instances are optimized for situations where the same set of values is frequently used for searching at run time.</remarks>
   </Docs>
   <Members>
+    <MemberGroup MemberName="Create">
+      <Docs>
+        <summary>Creates an optimized representation of <paramref name="values" /> used for efficient searching.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="Create">
       <MemberSignature Language="C#" Value="public static System.Buffers.SearchValues&lt;byte&gt; Create (scoped ReadOnlySpan&lt;byte&gt; values);" FrameworkAlternate="net-10.0;net-11.0;net-9.0" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig class System.Buffers.SearchValues`1&lt;unsigned int8&gt; Create(valuetype System.ReadOnlySpan`1&lt;unsigned int8&gt; values) cil managed" />

xml/System.Buffers/SequenceReaderExtensions.xml

@@ -39,6 +39,11 @@
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
+    <MemberGroup MemberName="TryReadBigEndian">
+      <Docs>
+        <summary>Tries to read an <see cref="T:System.Int16" /> as big endian.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="TryReadBigEndian">
       <MemberSignature Language="C#" Value="public static bool TryReadBigEndian (this ref System.Buffers.SequenceReader&lt;byte&gt; reader, out short value);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig bool TryReadBigEndian(valuetype System.Buffers.SequenceReader`1&lt;unsigned int8&gt;&amp; reader, [out] int16&amp; value) cil managed" />
@@ -159,6 +164,11 @@
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
+    <MemberGroup MemberName="TryReadLittleEndian">
+      <Docs>
+        <summary>Tries to read an <see cref="T:System.Int16" /> as little endian.</summary>
+      </Docs>
+    </MemberGroup>
     <Member MemberName="TryReadLittleEndian">
       <MemberSignature Language="C#" Value="public static bool TryReadLittleEndian (this ref System.Buffers.SequenceReader&lt;byte&gt; reader, out short value);" />
       <MemberSignature Language="ILAsm" Value=".method public static hidebysig bool TryReadLittleEndian(valuetype System.Buffers.SequenceReader`1&lt;unsigned int8&gt;&amp; reader, [out] int16&amp; value) cil managed" />