Man pages matching name net::oauth::v1_0a::accesstokenrequest in section 3pm:

Net::OAuth::V1_0A::AccessTokenRequest.3pm.en	debian 10 / libnet-oauth-perl
Net::OAuth::V1_0A::AccessTokenRequest.3pm.en	debian 11 / libnet-oauth-perl
Net::OAuth::V1_0A::AccessTokenRequest.3pm.en	debian 12 / libnet-oauth-perl