<ExtractVariables name='EV-Token-From-Header'>
  <Source>request</Source>
  <VariablePrefix>extracted</VariablePrefix>
  <Header name='Authorization'>
    <Pattern>Bearer {access_token}</Pattern>
  </Header>
  <IgnoreUnresolvedVariables>false</IgnoreUnresolvedVariables>
</ExtractVariables>
