What is the equivalent snippy function for luasnip.lsp_expand()

[DrGo]

I managed to convert from my luasnip settings to snippy except for the following

cmp.setup {
  snippet = {
    expand = function(args) luasnip.lsp_expand(args.body) end,
  },

How should I approach this? Thanks,

full config

local snippy = require("snippy")
-- Insert mode snippy completion mapping - '<Control-s>'
map("i", "<C-s>", function() require('snippy').complete() end, { silent = true })
local cmp = require 'cmp'
cmp.setup {
  snippet = {
    expand = function(args) snippy.lsp_expand(args.body) end,
  },
  mapping = cmp.mapping.preset.insert {
    ['<C-n>'] = cmp.mapping.select_next_item(),
    ['<C-p>'] = cmp.mapping.select_prev_item(),
    ['<C-d>'] = cmp.mapping.scroll_docs(-4),
    ['<C-f>'] = cmp.mapping.scroll_docs(4),
    ['<C-Space>'] = cmp.mapping.complete {},
    ['<CR>'] = cmp.mapping.confirm {
      behavior = cmp.ConfirmBehavior.Replace,
      select = true,
    },
    ['<Tab>'] = cmp.mapping(function(fallback)
      if cmp.visible() then
        cmp.select_next_item()
      elseif snippy.can_expand_or_advance() then
        snippy.expand_or_advance()
      else
        fallback()
      end
    end, { 'i', 's' }),
    ['<S-Tab>'] = cmp.mapping(function(fallback)
      if cmp.visible() then
        cmp.select_prev_item()
      elseif snippy.can_jump(-1) then
        snippy.previous()
      else
        fallback()
      end
    end, { 'i', 's' }),
  },
  sources = {
    { name = 'nvim_lsp' },
    { name = 'path' },
    { name = 'snippy' },
    {
      name = 'spell',
      option = {
        keep_all_entries = false,
        enable_in_context = function() return true end,
      },
    },
    { name = 'buffer' },
    { name = 'pandoc_references' }
  },
}

[DrGo]

found expand_snippet and seems to work fine