avoid errors when getting help for S4 class in global env
avoid errors when getting help for S4 class in global env

jar1karp/rstudio,jrnold/rstudio,jar1karp/rstudio,jrnold/rstudio,JanMarvin/rstudio,jar1karp/rstudio,jar1karp/rstudio,jrnold/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,jar1karp/rstudio,jrnold/rstudio,jar1karp/rstudio,JanMarvin/rstudio,jar1karp/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,jar1karp/rstudio,jar1karp/rstudio,jrnold/rstudio,JanMarvin/rstudio,jrnold/rstudio,JanMarvin/rstudio,jrnold/rstudio,JanMarvin/rstudio,jrnold/rstudio,jrnold/rstudio