def METHOD_NAME(schema):
    from ._arg import AAZCompoundTypeArg
    lines = []
    long_summary = schema._help.get("long-summary", "")
    if long_summary:
        lines.append(long_summary)
    if isinstance(schema, AAZCompoundTypeArg):
        lines.append(shorthand_help_messages['long-summary'])
    if schema._is_preview:
        preview = status_tag_messages['preview'].format("This argument")
        lines.append(preview)
    if schema._is_experimental:
        experimental = status_tag_messages['experimental'].format("This argument")
        lines.append(experimental)
    return '\n'.join(lines)