Plug 'Shougo/neco-vim'
Plug 'prabirshrestha/asyncomplete.vim'
Plug 'prabirshrestha/asyncomplete-necovim.vim'

au User asyncomplete_setup call asyncomplete#register_source(asyncomplete#sources#necovim#get_source_options({
    \ 'name': 'necovim',
    \ 'allowlist': ['vim'],
    \ 'completor': function('asyncomplete#sources#necovim#completor'),
    \ }))