fn signature_help_for_tuple_struct_pat(
sema: &Semantics<'_, RootDatabase>,
pat: TupleStructPat,
token: SyntaxToken,
edition: Edition,
display_target: DisplayTarget,
) -> Option<SignatureHelp>fn signature_help_for_tuple_struct_pat(
sema: &Semantics<'_, RootDatabase>,
pat: TupleStructPat,
token: SyntaxToken,
edition: Edition,
display_target: DisplayTarget,
) -> Option<SignatureHelp>