title: Is ArrayPool<T>.Rent(Int32) Method thread-safe?
body: <p>I just found out about ArrayPool existence, but it's documentation is somewhat lacking.</p>
  
  <p>I'd like to know if <a href="https://docs.microsoft.com/en-us/dotnet/api/system.buffers.arraypool-1.rent?view=netcore-2.1" rel="noreferrer">Rent(.)</a> and <a href="https://docs.microsoft.com/en-us/dotnet/api/system.buffers.arraypool-1.return?view=netcore-2.1" rel="noreferrer">Return(.)</a> are thread-safe.</p>
  
  <p>Edit: looks like I didn't notice the "Thread Safety" part of documentation; but reading some of the comments and answers I was relieved I wasn't the only one that didn't. </p>