Execute ( SpaceVim lua layer: lang#java ):
  if has('nvim-0.5.0') || has('+lua')
    let cmp = SpaceVim#api#import('vim#compatible')
    lua require('spacevim.layer.lang.java').set_variable({format_on_save = false})
    lua format_on_save = require('spacevim.layer.lang.java').get_variable().format_on_save
    AssertEqual cmp.luaeval('format_on_save'), v:false
  endif