function(event)
  -- NOTE: Remember that lua is a real programming language, and as such it is possible
  -- to define small helper and utility functions so you don't have to repeat yourself
  -- many times.
  --
  -- In this case, we create a function that lets us more easily define mappings specific
  -- for LSP related items. It sets the mode, buffer and description for us each time.
  local map = function(keys, func, desc)
    vim.keymap.set("n", keys, func, { buffer = event.buf, desc = "LSP: " .. desc })
  end

  -- Jump to the definition of the word under your cursor.
  --  This is where a variable was first declared, or where a function is defined, etc.
  --  To jump back, press <C-T>.
  map("gd", require("telescope.builtin").lsp_definitions, "[G]oto [D]efinition")

  -- Find references for the word under your cursor.
  map("gr", require("telescope.builtin").lsp_references, "[G]oto [R]eferences")

  -- Jump to the implementation of the word under your cursor.
  --  Useful when your language has ways of declaring types without an actual implementation.
  map("gI", require("telescope.builtin").lsp_implementations, "[G]oto [I]mplementation")

  -- Jump to the type of the word under your cursor.
  --  Useful when you're not sure what type a variable is and you want to see
  --  the definition of its *type*, not where it was *defined*.
  map("<leader>D", require("telescope.builtin").lsp_type_definitions, "Type [D]efinition")

  -- Fuzzy find all the symbols in your current document.
  --  Symbols are things like variables, functions, types, etc.
  map("<leader>ds", require("telescope.builtin").lsp_document_symbols, "[D]ocument [S]ymbols")

  -- Fuzzy find all the symbols in your current workspace
  --  Similar to document symbols, except searches over your whole project.
  map(
    "<leader>ws",
    require("telescope.builtin").lsp_dynamic_workspace_symbols,
    "[W]orkspace [S]ymbols"
  )

  -- Rename the variable under your cursor
  --  Most Language Servers support renaming across files, etc.
  map("<leader>rn", vim.lsp.buf.rename, "[R]e[n]ame")

  -- Execute a code action, usually your cursor needs to be on top of an error
  -- or a suggestion from your LSP for this to activate.
  map("<leader>ca", vim.lsp.buf.code_action, "[C]ode [A]ction")

  -- Opens a popup that displays documentation about the word under your cursor
  --  See `:help K` for why this keymap
  map("K", vim.lsp.buf.hover, "Hover Documentation")

  -- WARN: This is not Goto Definition, this is Goto Declaration.
  --  For example, in C this would take you to the header
  map("gD", vim.lsp.buf.declaration, "[G]oto [D]eclaration")

  -- The following two autocommands are used to highlight references of the
  -- word under your cursor when your cursor rests there for a little while.
  --    See `:help CursorHold` for information about when this is executed
  --
  -- When you move your cursor, the highlights will be cleared (the second autocommand).
  local client = vim.lsp.get_client_by_id(event.data.client_id)
  if client and client.server_capabilities.documentHighlightProvider then
  vim.api.nvim_create_autocmd({ "CursorHold", "CursorHoldI" }, {
    buffer = event.buf,
    callback = vim.lsp.buf.document_highlight,
  })

  vim.api.nvim_create_autocmd({ "CursorMoved", "CursorMovedI" }, {
    buffer = event.buf,
    callback = vim.lsp.buf.clear_references,
  })
  end
end