add missing exception info

Author: antonfirsov

xml/System.Net.Http/HttpClient.xml

@@ -276,6 +276,9 @@ The specified `handler` will be disposed of by calling [HttpClient.Dispose](xref
 
  ]]></format>
         </remarks>
+        <exception cref="T:System.ArgumentException">The <see cref="T:System.Uri" /> specified is not an absolute Uri.</exception>
+        <exception cref="T:System.InvalidOperationException">The <see cref="T:System.Net.Http.HttpClient" /> instance has already started one or more requests.</exception>
+        <exception cref="T:System.ObjectDisposedException">The <see cref="T:System.Net.Http.HttpClient" /> instance has already been disposed.</exception>
       </Docs>
     </Member>
     <Member MemberName="CancelPendingRequests">
@@ -508,6 +511,8 @@ The `DefaultRequestVersion` property can be changed as long as the <xref:System.
 This property has no effect on any of the <xref:System.Net.Http.HttpClient.Send%2A> or <xref:System.Net.Http.HttpClient.SendAsync%2A> overloads that accept an <xref:System.Net.Http.HttpRequestMessage?displayProperty=nameWithType>.
  ]]></format>
         </remarks>
+        <exception cref="T:System.InvalidOperationException">The <see cref="T:System.Net.Http.HttpClient" /> instance has already started one or more requests.</exception>
+        <exception cref="T:System.ObjectDisposedException">The <see cref="T:System.Net.Http.HttpClient" /> instance has already been disposed.</exception>
       </Docs>
     </Member>
     <MemberGroup MemberName="DeleteAsync">
@@ -2349,7 +2354,11 @@ The <paramref name="requestUri" /> is not an absolute URI.
 
  ]]></format>
         </remarks>
-        <exception cref="T:System.ArgumentOutOfRangeException">The size specified is less than or equal to zero.</exception>
+        <exception cref="T:System.ArgumentOutOfRangeException">The size specified is less than or equal to zero
+-or-
+
+The size specified is greater than the maximum allowed buffer size.</exception>
+        </exception>
         <exception cref="T:System.InvalidOperationException">An operation has already been started on the current instance.</exception>
         <exception cref="T:System.ObjectDisposedException">The current instance has been disposed.</exception>
       </Docs>
@@ -3720,7 +3729,12 @@ httpClient.Timeout = TimeSpan.FromMinutes(10);
 
  ]]></format>
         </remarks>
-        <exception cref="T:System.ArgumentOutOfRangeException">The timeout specified is less than or equal to zero and is not <see cref="F:System.Threading.Timeout.InfiniteTimeSpan" />.</exception>
+        <exception cref="T:System.ArgumentOutOfRangeException">The timeout specified is less than or equal to zero and is not <see cref="F:System.Threading.Timeout.InfiniteTimeSpan" />
+
+-or-
+
+The timeout specified is greater than <see cref="F:System.Int32.MaxValue" /> milliseconds.</exception>
+        .</exception>
         <exception cref="T:System.InvalidOperationException">An operation has already been started on the current instance.</exception>
         <exception cref="T:System.ObjectDisposedException">The current instance has been disposed.</exception>
       </Docs>