Y2R::AST::Ruby::Def: Pass correct available width to args
Y2R::AST::Ruby::When: Pass correct available width to values
Y2R::AST::Ruby::Expressions: Pass correct available width to expressions
Y2R::AST::Ruby::Block: Pass correct available width to args
Y2R::AST::Ruby::Array: Pass correct available width to elements
Y2R::AST::Ruby::Hash: Pass correct available width to entries
Y2R::AST::Ruby::MethodCall: Pass correct available width to subnodes