title: authorization code flow without code_challenge_method & code_challenge via spring-security-oauth2-client
body: <p>We have identity server which does not support PKCE. It cannot be modified to include PKCE.</p>
  <p>I am trying to implement authorization code flow on same identity server using spring-security-oauth2-client , spring-boot-starter-security &amp; webclient. The generated authorization code uses  code_challenge_method &amp; code_challenge which is giving error while accessing token. <strong>Is there any way in spring to not use PKCE by default?</strong></p>
  <p>I am using spring boot version 2.3.4.RELEASE</p>