title: Can we take IdentityServer4 source code from github and upgrade it to Net 6.0 and use it?
body: <p>IdentityServer4 is open source version supporting .Net Core 3.1 and I got to know that next version is not open source and requires a license.</p>
  <p>We need to use IdentityServer in a .Net 6 project.</p>
  <p>Can we take IdentityServer4 source code from github and upgrade it to Net 6.0 and use it? Are there any limitations?</p>