Man pages matching name pmusecontext in section 3:

pmUseContext.3.en	debian 10 / libpcp3-dev
pmusecontext.3.en	debian 10 / libpcp3-dev
pmUseContext.3.en	debian 11 / libpcp3-dev
pmUseContext.3.en	debian 12 / libpcp3-dev