class SyntaxTree::Parser

def on_alias(left, right)

) -> AliasNode
(DynaSymbol | SymbolLiteral) right
(DynaSymbol | SymbolLiteral) left,
on_alias: (
:call-seq: 
def on_alias(left, right)
  keyword = consume_keyword(:alias)
  AliasNode.new(
    left: left,
    right: right,
    location: keyword.location.to(right.location)
  )
end