Man pages matching name globus_ftp_client_throughput_nl_plugin.h in section 3:

globus_ftp_client_throughput_nl_plugin.h.3.en	debian 10 / libglobus-ftp-client-doc
globus_ftp_client_throughput_nl_plugin.h.3.en	debian 11 / libglobus-ftp-client-doc
globus_ftp_client_throughput_nl_plugin.h.3.en	debian 12 / libglobus-ftp-client-doc