and related interfaces). >lua
    local client = assert(vim.lsp.get_clients()[1])
    client:request('textDocument/definition')

- Setting a field in `vim.lsp.handlers`. This global table contains the
  default mappings of |lsp-method| names to handlers. (Note: only for
  server-to-client requests/notifications, not client-to-server.)
  Example: >lua
    vim.lsp.handlers['textDocument/publishDiagnostics'] = my_custom_diagnostics_handler

- Passing a {handlers} parameter to |vim.lsp.start()|. This sets the default
  |lsp-handler| for a specific server. (Note: only for server-to-client
  requests/notifications, not client-to-server.)
  Example: >lua
    vim.lsp.start {
      ..., -- Other configuration omitted.
      handlers = {
        ['textDocument/publishDiagnostics'] = my_custom_diagnostics_handler
      },
    }

- Passing a {handler} parameter to |vim.lsp.buf_request_all()|. This sets the
  |lsp-handler| ONLY for the given request(s).
  Example: >lua
    vim.lsp.buf_request_all(
      0,
      'textDocument/publishDiagnostics',
      my_request_params,
      my_handler
    )
<

                                                            *vim.lsp.log_levels*
Log levels are defined in |vim.log.levels|


VIM.LSP.PROTOCOL                                              *vim.lsp.protocol*

Module `vim.lsp.protocol` defines constants dictated by the LSP specification,
and helper functions for creating protocol-related objects.
https://github.com/microsoft/language-server-protocol/raw/gh-pages/_specifications/specification-3-14.md

For example `vim.lsp.protocol.ErrorCodes` allows reverse lookup by number or
name: >lua

    vim.lsp.protocol.TextDocumentSyncKind.Full == 1
    vim.lsp.protocol.TextDocumentSyncKind[1] == "Full"
<

                                                                *lsp-response*
LSP response shape:
https://microsoft.github.io/language-server-protocol/specifications/specification-current/#responseMessage

                                                                *lsp-notification*
LSP notification shape:
https://microsoft.github.io/language-server-protocol/specifications/specification-current/#notificationMessage

================================================================================
LSP HIGHLIGHT                                                    *lsp-highlight*

Reference Highlights:

Highlight groups that are meant to be used by |vim.lsp.buf.document_highlight()|.

You can see more about the differences in types here:
https://microsoft.github.io/language-server-protocol/specification#textDocument_documentHighlight

                                                         *hl-LspReferenceText*
LspReferenceText          used for highlighting "text" references
                                                         *hl-LspReferenceRead*
LspReferenceRead          used for highlighting "read" references
                                                        *hl-LspReferenceWrite*
LspReferenceWrite         used for highlighting "write" references
                                                       *hl-LspReferenceTarget*
LspReferenceTarget        used for highlighting reference targets (e.g. in a
                          hover range)
                                                             *hl-LspInlayHint*
LspInlayHint              used for highlighting inlay hints


                                                      *lsp-highlight-codelens*

Highlight groups related to |lsp-codelens| functionality.

                                                              *hl-LspCodeLens*
LspCodeLens
    Used to color the virtual text of the codelens. See
    |nvim_buf_set_extmark()|.

LspCodeLensSeparator                                 *hl-LspCodeLensSeparator*
    Used to color the separator between two or more code lenses.

                                                     *lsp-highlight-signature*

Highlight groups related to |vim.lsp.handlers.signature_help()|.