nmap <Leader>a <Plug>(coc-codeaction)
nmap <Leader>gd <Plug>(coc-definition)
nmap <Leader>gr <Plug>(coc-references)
nmap <Leader>gi <Plug>(coc-implementation)
nmap <Leader>gt <Plug>(coc-type-definition)
nmap <Leader>sr <Plug>(coc-rename)
nmap <Leader>rf <Plug>(coc-refactor)
nnoremap <silent> K :call <SID>show_documentation()<CR>