Macro enso_shapely::shared_bracket_fn

macro_rules! shared_bracket_fn {
    ( $base:ident :: $(#[$($meta:tt)*])* $acc:vis fn new $([$($params:tt)*])?
      ($($arg:ident : $arg_type:ty),*) $(-> $type:ty)? $(where $($wt1:ty : $wt2:path),* )? ) => { ... };
    ( $base:ident :: $(#[$($meta:tt)*])* $acc:vis fn $name:ident $([$($params:tt)*])?
      (&self $(,$($arg:ident : $arg_type:ty),+)?) $(-> $type:ty)? $(where $($wt1:ty : $wt2:path),* )? ) => { ... };
    ( $base:ident :: $(#[$($meta:tt)*])* $acc:vis fn $name:ident $([$($params:tt)*])?
      (&mut self $(,$($arg:ident : $arg_type:ty),+)?) $(-> $type:ty)? $(where $($wt1:ty : $wt2:path),* )? ) => { ... };
}