code: def get_user(username: str) -> User:
      try:
          return User.from_name(username)
      except ValueError as e:
          echo_in_panel(
              f"User with username={username} does not exist",
              title="User not found",
              title_align="left",
              success=False,
          )
          raise typer.Exit(code=1) from e
      except RuntimeError as e:
          echo_in_panel(
              "An unexpected error occurred when trying to retrieve the user from the Argilla server",
              title="Unexpected error",
              title_align="left",
              success=False,
          )
          raise typer.Exit(code=1) from e
  
imports: import typer
  from argilla.cli.rich import echo_in_panel
  from argilla.client.users import User
label_desc: Use image node_id 1 for calling a global function with example usage: get_user(username) and returns: User