Function clippy_utils::is_expr_path_def_path

pub fn is_expr_path_def_path(
    cx: &LateContext<'_>, 
    expr: &Expr<'_>, 
    segments: &[&str]
) -> bool

If the expression is a path, resolves it to a DefId and checks if it matches the given path.

Please use is_expr_diagnostic_item if the target is a diagnostic item.