function format_filter(client)
	local filetype = vim.bo.filetype
	local n = require("null-ls")
	local s = require("null-ls.sources")
	local method = n.methods.FORMATTING
	local available_formatters = s.get_available(filetype, method)

	if #available_formatters > 0 then
		return client.name == "null-ls"
	elseif client.supports_method("textDocument/formatting") then
		return true
	else
		return false
	end
end
vim.cmd([[
augroup _lsp
     autocmd!
     " autocmd BufWritePre * lua vim.lsp.buf.format{timeout_ms =200, filter=format_filter}
     autocmd BufWritePre * lua vim.lsp.buf.format{timeout_ms=1000 ,filter=format_filter}
  augroup end
]])